Article By Chris Fry / MDTS Training
We possess a number of ways to move in a combative environment and it is well documented that movement is a life saving tactic. Movement almost always helps us except maybe when attempting to engage a target with accurate gun fire. This guide will focus on the varied methods of vertical displacement taught in the MDTS level 1&2 course work. Vertical displacement in this context is movement along the vertical line or up and down through varied shooting positions. Vertical movement can aid us by making us a hard target when in a location where horizontal, forward or backward movement is inhibited, such as in a hallway. Vertical movement also aids us when attempting to establish a desired angle of fire or achieve maximum cover and/or concealment behind an object such as a vehicle, postal box or concrete Wal-Mart lamp piling in a parking lot.
Please note: This is meant to be a quick study guide not a treatise on positional shooting so adapt what is useful and discard what is not.
The following are (5) shooting positions along the vertical plane of movement:
This information was originally posted on our forum by LDD. Please understand that LDD and NYFirearms.com or its staff are not firearms experts, law enforcement, lawyers, legal experts or anything of the sort so this information should not be taken as legal advice. The observations regarding date stamps on magazines described in this post are just that, observations based on examining several magazines and are not intended to be taken as absolute fact. As always, please consult a qualified legal expert if you are unsure of any laws or regulations.
If you are looking for a really durable, bomb-proof magazine, then I’d point you to the Chartered Industries (CI) and Imperial Defense (ID) steel 30 round magazines. These are NATO standard dimensions, but the ID mags were intended for the Brit’s SA-80s. IIRC Singapore uses a mix of rifles that include M16 pattern and their own domestic bullpups. Both fit in properly spec’d US AR15s without modification.
Chartered Industries Mags:
The downside of the CI and grey ID mags is the prebans shipped with blue followers that were complete crap. They were shaped like our green/orange followers, but made out of a plastic that has the consistency of a gummy bear (they would bow inside the mag body: bow in front = follower hangup; bow in back = bolt doesn’t lock back on the last round).
I replace these blue followers with Magpul followers as a matter of conscience, before I sell them (they are that bad). The CI mags may require you to grind a little of the MP followers away before they will fit (front baseplate retention tabs on CI mags are oversized compared to USGI mags). MP followers fit the Imperial Defense mags without modification.
Imperial Defense Magazines (subcategories: Black and Grey):
Did some more research on these, including contacting some folks that used the black magazines for wildcat builds during the ban. I knew the grey ones were preban because I bought a batch during the ban (at “preban” prices too). Personally, I never encountered the black ones till after the ban but have since spoken with builders, who, as I said, used the black 30 round mags for wildcat AR builds.
While I’m down here on vacation, I’ve been watching various firearms DVD’s so expect more of these reviews from me! Anyways, I watched this latest one from Personal Defense Network. PDN is one of the premier websites to find personal defense video and training. They offer many DVD installations of various training installments and more. PDN’s managing editor, Rob Pincus, owner of I.C.E. Training, is very well-known in the industry as a professional firearms instructor, author and consultant. PDN has some very talented and nationally known contributors such as Cecil Burch, Mike Janich, Claude Werner, and our own Chris Fry of MDTS.
On this 2011 PDN DVD, we explore Carbine Retention and Combatives as taught by Chris Fry of MDTS Training. Chris is one of our contributors right here on NY Firearms, and nationally know for much of his combatives training content. The content on this DVD is taken directly from his Combative Carbine Skills 3&4 where you get hands-on training of this exact material.
The information on this DVD is great and I recommend it for anyone who train’s fairly often with a carbine platform. It is important, especially for people who are utilizing a carbine platform as their primary home defense firearm. One great benefit of Chris’ approach to training is the focus on defensive tactics from a civilian or citizen standpoint. Another overall comment I can make is that the information is very concise, yet complete, and there are great recaps of information after each chapter.
Additionally, Chris goes over some great information about gear choices and it’s relation to carbine retention and combatives. I think there’s so much focus on picking equipment and arguing on the internet over whats better than what, and it’s refreshing to see suggestions for gear based on a very real situation. As I said above, I would absolutely recommend this DVD to anyone who is into firearms, defense, and carbine practical usage as a whole. I was very impressed with the quality of the video, and I look forward to watching the Combat Focus Shooting one from PDN next!
DVD Topics of Instruction
4. C.O.R.R. Drills
5. Additions to C.O.R.R.
6. Direct Action Combatives
7. Direct Action Combatives Drills
8. Retention Drills
9. Alternative Strikes and Fending
10. Integrating Response with a Handgun
11. Retention of a Secondary Tool
Additionally, Jim Emmick of Firearms Training of Western NY, who is one of our sponsors and regular contributors, has written a review of the DVD as well. You can view that here: Thread: Personal Defense Network DVD titled “Carbine Combatives and Retention”
During my career in the military I was fortunate enough to use a wide variety of optics on the M-4 weapon system. While all of these generally performed well, each was built with a specific purpose and I routinely saw optics being mounted and employed incorrectly, and improper optic use quickly became a personal pet-peeve. Consequently, I’ve put together a list of considerations, tips, and TTPs (tactics, techniques, and procedures) to help you decide what kind of optic to place on your AR, and some things to keep in mind while you are training.
Purpose is paramount when deciding what type of optic to use, and most AR15 optics can be grouped into these two categories:
For the purposes of this article I will give a quick rundown of the background, purpose, and correct employment of each optic, followed by a few tips, training TTPs (tactics, techniques, and procedures), and lessons learned from my experiences with these optics.
This month we will be making some major changes to the site! In this post I’m going to outline some of these changes so you all know what to expect.
First, as you all have probably noticed we are growing like crazy! We’re about to tip the scales at almost 50,000+ visits per month. We are also averaging 40-50 online users at a time. Some users who are online regularly have noticed some performance issues as of late so we’re going to try to resolve this issue by moving the site to a virtual private server. This should help with any issues and give us a major boost in performance.
Next up, we’ve listened to everyones recommendations and we’re going to update the theme of the site to something fresh and hopefully easier on the eyes for everyone. With this we are also going to be updating the forum software to VB4. This should give us some more enhancements to the forums and hopefully fix any issues that we aren’t aware of.
Last, but certainly not least, we will be adding a huge amount of reviews to the site. From our trip to SHOT we were able to make some great contacts and we will be able to review products that might be otherwise unavailable. If you are a manufacturer or a trainer and would like us to review something for you, please feel free to contact us at [email protected].
Some of the products and services we will be reviewing are:
We’re also going to revive project AR-15! If you have any other ideas for us whether products to review or site suggestions, contact us or post in the forums!
While I was at SHOT show, I had the opportunity to go through some of CMMG’s new products with owner, John Overstreet. One that particularly caught our eye was their new takedown upper, which allows the rifle to be broken down in half for easy transportation and storage.
This was a pretty cool innovation by the team at CMMG and different from the current detachable and modular systems out there. As you can see from the pictures, the CMMG system uses a detachable rail/barrel combo in order to split the rifle into two pieces. It has a small flip-switch to disconnect the two pieces.
We recently spoke with John after returning from the SHOT show and he anticipates that he can get us one to test and write a full review on within 30 or so days. Needless to say, we are extremely excited to be able to bring cutting edge products to our readers here at NYFirearms.com!
Yesterday was the first day for the SHOT show. I would have had this blog post up last night, but well… you know, it’s Vegas and all 😉 Anyways, the show is held at the Sands Expo and Convention center. It’s in like 6 different rooms across 3 floors, and I’m pretty sure I might have only been through 40% of it in the first day! Please excuse the cell phone pics, as I wanted to be able to give you guys a teaser without having to offload everything from my big camera.
There are so many vendors here, it is unbelievable how anyone can even make it through all of it and remember where they are. So we started in the Law Enforcement section because I wanted to visit my friends at the Daniel Defense booth. They have nearly 5 20×20 booths, with all kinds of new products, including their new line of Ambush products, geared towards the hunting enthusiasts. We’ll have more pictures of that when I offload everything off of my good camera.
The law enforcement section was actually pretty great to walk through. I do a lot of work with local law enforcement and it was great to see the new and latest offerings, not only in firearms, but in gear and other products. It definitely made me feel good to see that there are so many great companies supporting the boys in blue.
Also, in law enforcement, was the Pelican booth, displaying a ton of their great multi-gun cases, along with several new flashlight offerings for 2011. Their products are always quite innovative, and if it weren’t for the price, I’d have the 6 AR case in Flat Dark Earth!
Also in the law enforcement section was LMT, KNS Precision, Precision Reflex Inc, EOTech, Magpul, Vortex Optics, Nightforce Optics, Phoebus Flashlights, Stag Arms, Voodoo Tactical, Meprolight, and a few others.
LoKsak, Inc had a booth in the LE section as well and they were demonstrating some high end waterproof bag solutions for phones and other gear. They had an iPhone in their bag, down in a fish tank. The phone is still completely usable through the bag, which makes the product great for people using their phones near water. Look for a future review from us on their products.
We stopped by the Accuracy International booth, which was also in the LE section, to check out some of their kick-ass chassis systems for R700 rifles, as well as their complete long rage rifles offered in .308, .338 Lapua, and .50BmG. They had a very nice booth, and their rep was very helpful in giving us a rundown on their new products. We hope to be reviewing one of their R700 chassis in the near future!
After making our way through the LE section, it was time for a small break because even though the section we were in was “small” it was probably almost of mile of walking between looping down the aisles. We wanted to get into the main section, but we weren’t prepared for how big it was going to be….
When we crossed over into the main section of the SHOT show, an overwhelming feeling came across all of us… “We have to walk this?!?!” Considering the fact that the main part of the show was probably over 100,000 square feet, it was quite the daunting task to think about having to walk the entire thing! Well, we complained a little bit more and then went on our way.
As we started going up and down the aisles, trying to fight the urge to skip through them, and just run up to the fun-looking booths, or the ones that gave out free candy, pens, or keychains, we noticed that Magnum research had a booth, so we stopped by to handle some Desert Eagles and baby DE’s.
Having never personally held one of these before, it came quite apparent that I need to purchase one to take some pistol training. However, I think Brian Hartman from PFC would kick my ass if I did. The first impression from holding the gold plated Desert Eagle in
.50AE was one of absolute coolness. I don’t think I’ve ever looked this cool as I did when holding a gold plated Desert Eagle. It was about halfway through my daydreaming of fame when my wife, Erica, smacked me and said put it down and lets go. I put it back, we moved on our way, but not without asking if they made them in anodized Pink (uhh, for her).
In the main section, there are so many booths, it was hard to keep track of which ones we were stopping at. We had stopped by the Walther booth to check out their new handgun, the Hogue booth to see their new knives, and the Allen booth to yell at them for discontinuing the tactical rifle bags. There were many booths that had hunting supplies and the like, but being I am more a black rifle kind-of guy, we didn’t stop at very many of those.
Along the way we stopped at the LaRue Tactical booth so I could introduce myself to Mark LaRue. We snapped a couple pics, and I checked out some of his new products. Seems like they have a few new, noteworthy products that we may save for some reviews in the future.
We also stopped in the “Made in Germany” section where they were showcasing various manufacturers from Germany, and their respective importers. We met a company that has a great add-on to turn a glock/1911 into a carbine. While it may not be legal for a civilian to own, it seemed like a very innovative product for law enforcement and military. We are going to do some more research on the product and it’s respective laws. Also, we will probably be receiving some samples to write some reviews on as well.
Another German-based company that we ran into was Ballistol. The product, which is environmentally friendly, is a multi-purpose lubricator/protector/preserve for your firearms. It seems like a great “green” product, and we are going to write up a review on how it holds up to some of the others.
We decided to stop at the humongous NRA booth to talk with them about recruiting. We found some great information on how we can help recruit members to the NRA as a club for NYFirearms.com. We decided to sign up and we’ll be providing information on the site where you guys can renew your membership, add a year, or sign up your wife/girlfriend/friend/etc. It will help us raise some money for the site, so we can bring new enhancements, better hosting, etc. The team at the NRA made it easy for us to sign up as recruiters, and we’re very excited to be able to offer it directly to our members. As we get more information on it, we’ll post it up and let you guys and gals know!
After finishing up at the NRA booth, we walked through the Beretta booth, and a few others before stopping by the Bushmaster booth to check our the ACR and some of the Carbon-15 AR pistols. The ACR is quite a cool rifle, despite it’s higher price tag. Obviously if you have a need for the interchangeable barrels, then it might be a great deal for you. I grabbed one off the wall, made my coolest face I could, and we snapped some pics.
The Freedom Group, which owns several large firearms companies, amongst them DPMS, Remington, Bushmaster, and Advanced Armament, had a huge display of their firearms and different products. However, Advanced Armament had it’s own booth and display, showing many of their suppressors, including some complete rifles using the new .300 Blackout round. Their marketing and their booth display was quite impressive, and their products back up their ability to market well. We certainly will be reviewing some of their products this year as well!
We also stopped by the KABAR booth where they had some brand new “Zombie Knives” which were a set of their large knives with neon green handles. They were pretty cool, and should be on any zombie-enthusiasts shopping list. Other than those, KABAR didn’t really have any other new products. They had some products that had been discontinued and were now reintroduced, but I wasn’t really all that impressed with their products.
Sig Sauer had a great booth at the show as well. They were featuring some of their new pistols, including the P290. We had a chance to hold and feel their new products along with their entire line of pistols. I also was able to meet Max Michel Jr., a new addition to the Sig Sauer shooting team, and we discussed some of the new handguns and other new products. I was definitely impressed by his knowledge and their booth display as well.
FNH USA had a very impressive booth at the show as well. We were able to handle the SCAR 17 as well as the P90, along with several other of the rifles they manufacture. The quality of their rifles show in the sample models, and they too had a very informative and well-setup booth.
As we were getting ready to head out of the show we stopped by the Glock booth and Colt booths. Both companies had very large booths, displaying all of their handguns and other products. It’s not surprising that some of the two largest handgun manufacturers had probably some of the biggest booths in the show. While we rushed through them, we will probably stop by there again today to check out some of their products.
Before we headed out of the show for the night, we wanted to stop by and see Mega Arms, which was located at the Adam’s Arms booth on the lower level. On our way there we came across the Dillon Aero booth, where I couldn’t help but test out their Minigun mount for vehicles, just in case I need to get one for my Jeep. We stuck around for a little bit longer to watch the videos on the miniguns in action before heading over to the Adam’s Arms booth to see the Mega Arms team.
When we got to the Mega Arms booth, we had a warm welcome, as we have been talking to Mega for quite some time now. They had their new MATEN receiver set there for us to check out as well as their brand new MATEN .308 monolithic upper. Both were absolutely gorgeous products.
Overall our passage through the show yesterday was pretty good. We made some great contacts for new products to review and companies to feature on here. We’re also super excited to be able to offer you guys the NRA memberships that will help keep this site going! Stay tuned for more pictures and blogging about our trip through the show today! We’ll also be adding a gallery with better pics from the good camera! Thanks for reading!
I’ve had the opportunity to attend Combative Carbine Skills 1&2 twice now, so I feel I can accurately review this class. First off, Modern Defensive Training Systems (MDTS) is run by Chris Fry, a well-versed training instructor as well as a great contributor to our forums, here at NY Firearms.Chris does not claim to be some crazy military, special forces, and he is especially not a ninja. With this said, he has had many years and several thousands of hours training, which can easily be seen in the way he carries himself and speaks to the class. He is always more than willing to help students throughout the class and is very knowledgeable in what he teaches.
To quote the course description from MDTS, Combative Carbine Skills series “emphasizes three critical elements of defensive shooting: Mindset, Skill-At-Arms, and Tactics.” CCS 1&2 begins the series with the fundamentals needed to operate the carbine in a combative and defensive manner. What I love, personally, is the focus on the class from a citizen perspective, which 90% of us who take these classes will be using the training for.
The first hour of the day was classroom-based training, which went over firearms safety, range safety, some carbine history and zeroing, accessories and rifle modifications, as well as some initial administrative firearms handling and platforms. Once the initial classroom training was complete, we moved out to the range and jumped right into zeroing our rifles.
Once all of the rifles were zeroed, training began. Without divulging too much of the course, there was a great deal of information thrown at the attendees. Personally, I enjoy “drinking from the firehose” as they say, but I can see how some people may not like that approach. However, most everyone rose to the occasion and stepped up their game to learn.
I also noticed that there were several people attending the class who had just bought their AR-15 or similar carbine, and by the end of the class they were engaging targets out to 75 yards, and clearing complicated “triple feed” malfunctions. Considering how some of the newer shooters were picking up the information, I have to say that speaks louder than I can about Chris’ proficiency as a trainer.
As I said above, this is the second time I have had the chance to take this class from MDTS, which has joined my resume of several other carbine training classes, and I have to say that I would highly recommend anyone with carbine rifles to give this class a shot (no pun intended). From the basic fundamentals to some advanced weapon malfunction clearing, the class provides a great deal of valuable information to the average shooter.
Combative Carbine Skills 1&2 Course Details
The MDTS Combative Carbine Skills curriculm is designed for the new rifle owner, individuals who have owned a rifle but never attended formal training as well as the seasoned operator. A solid grounding in safety and fundamentals of gun handling is presented with a heavy emphasis on the students ability to manipulate the carbine platform while mult-tasking or under stress. This is a fast paced, challenging course. Course content will include but is not limited to:
CCS1 Firearm Safety/Range Safety
History & Zero
Modifications & Sling Options
Personal Equipment Selection & Placement
Carry & Carbine Ready Positions
Shooting Response Theory
After Action Assessment Concept
Bilateral Weapon Operation
Transition to Handgun
Combative Shooting Positions
Vertical and Lateral Displacement
Multiple Target Engagement
Fundamental Use of Cover & Concealment and more…
A serviceable carbine to include M4, AR15, AK47 or pistol caliber rifle, a minimum of 3 magazines, 500+ rounds rifle – NO GREEN TIP OR AP AMMUNITION, 50 rounds pistol, eye and ear protection, pistol and minimum of 2 magazines (if you own a pistol), appropriate clothing for weather, water, hat with brim, optional equipment- sling, gloves & knee pads.
*A pistol is not required to attend this course
Additional Equipment Considerations:
Weapon mounted illumination tool, knee & elbow protection, note taking materials, lunch for full day class
I have noticed several questions on the forum recently focused on lubrication and maintenance of the carbine. So, I thought I’d post some generalized guidelines for maintenance, cleaning and lubrication. If followed, these guidelines will keep your carbine functioning optimally with minimum time expenditure.
The AR15/M4/M16 family of firearms has gotten a poor reputation due to the bad experiences and poor information provided to operators in the past. This weapon platform is highly reliable when maintained properly. Some general guidelines to follow to insure reliable function and life time service from your firearm:
1. Attempt to field strip and quick clean your carbine after each shooting session. Even if this only means you have time to de-grease the bolt carrier, bolt face and clean out the chamber and bore. This will go a long way toward maintaining reliability.
2. Soak small parts such as the charging handle, bolt carrier, bolt and its small parts in a Tupperware container of Hoppe’s #9 overnight. This will make cleaning these small, hard to reach surfaces much easier and save you time and trouble in the long run.
3. Attempt to fully field strip, inspect and thoroughly clean your firearm after every 3000 rounds. Note “witness marks” or where metal has rubbed on metal wearing away finish. These are important lubrications points. Look closely at the gas key on top of bolt carrier and make sure it is still tight.
4. Keep a close eye on components that are critical to the proper operation of your carbine such as the extractor and spring, ejector and spring, gas rings, firing pin and buffer spring. It is a good idea to have back ups for all of these essential parts in a range bag or kept at home.
5. Inspect the extractor claw making sure there are no cracks where the metal is thin or chips and that the claw is not filled with carbon or debris.
6. When lubricating remember that “less is more”. Your bolt and carrier do not have to be soaking wet. Extra lubricant will attract dust, dirt and debris when firing your carbine. A light coat or sheen is all that is needed.
7. Make sure the charging handle is not bent. Lateral stress is put on the charging handle during aggressive cycling and over time they will bend and the finish will wear on one side creating witness marks.
8. Utilize a q-tip, tooth pick or dental pick to clean carbon or chunks of debris out from around the trigger group. Visually verify the legs of the trigger spring are the same length and not broken.
9. During dedicated field stripping remove the action spring/buffer spring from the receiver extension and inspect. Remove the buffer from the spring and degrease along with spring. Lightly lubricate the spring before replacing buffer and spring into receiver extension.
10. Learn and understand the “Cycle of Operation” for your carbine: Feeding, Locking, Firing, Unlocking, Extracting, Ejecting, Cocking, Chambering. Understanding this cycle will aid in recognizing and diagnosing any malfunctions or problems experienced while firing your carbine.
Recommended Cleaning Tools, Solvents & Lubricants
Listed in the order I use them. No fancy cleaning tools are necessary to maintain a carbine. Field expeidient items found at any small mini-mart or box store can be utilized for 99% of carbine maintenance. However, good cleaning kits such as those manufactured by Otis are a good investment and can make the job easier. http://www.otisgun.com/
There are numerous degreasers and lubricants available on the market today ranging in price. Over the years I have tested/used pretty much all of them. The best degreaser I have found is Mil-Comms MC25. http://www.mil-comm.com/. For lubricants I now use and recommend Mobile One motor oil found at any box store, if these motor oils work in high performance vehicles and motorcycles they will certainly work in my carbine. A single container of Mobile One ($2.oo) will last several years. Use sparingly, apply a very small amount to the tip of a finger and then apply to common lubrication points.
About Chris Fry
Chris is the owner and director of training and curriculum development for Modern Defensive Training Systems in Utica, NY where he conducts courses in reality driven practical combatives skills, extreme close quarters physical defense, tactical folding knife and edged weapon combatives and combative pistol, carbine and shotgun skills. Chris has been an active instructor with Progressive F.O.R.C.E. Concepts in Nevada since 2003, servicing law enforcement, military and select government agencies. Chris is a certified AR15/M4/M16 and Glock armorer, contributor to various online firearms resource websites and a frequent presenter at national and international personal protection and small arms training conferences for both citizens and law enforcement.
For more information or to locate carbine, shotgun or pistol training in your area see: http://www.mdtstraining.com
Stag Arms is quickly becoming widely known as a great manufacturer of reasonably priced, quality AR-15 rifles. They are also very well known for making left-handed models of their AR-15’s. When I heard they were going to be releasing a Gas Piston rifle, I needed to get my hands on one to review. Well, thanks to Allstar Tactical, one of our site sponsors, I was able to borrow a Model 8 rifle to check out and review.
The direct gas system of a typical AR-15 rifle has worked well for decades, but it has is drawbacks with reliability and cleaning. The gas tube can become clogged from carbon buildup, especially when used with lower quality ammunition. Many manufacturers have answered this call with a gas piston system, which is exactly what it describes; the action moves based on the gas transferring its energy to a piston, which, in turn, moves the bolt rearward.
There are several other manufacturers of Gas Piston AR-15 rifles, but many of them are fairly pricey and extend upwards of $2000. The Stag Arms Model 8, with it’s MSRP of $1145, comes in a great price-point, and definitely competes very well in the market.
The gas-piston system on the Model 8 is actually quite simple. Gas bleeds off through a hole in the barrel, through the regulator, actuating the piston which pushes the bolt carrier back, cycling the action. There is a spring in the forward section of the piston system which keeps the piston in the forward position until the rifle is fired. The regulator also has two positions, ON and OFF. The ON position allows the rifle to function normally, while the OFF position will allow the rifle to fire, but will not cycle the action. This system is considered a short-stroke gas piston system.
Besides the enhancement of the gas-piston system, the Stag Model 8 is everything you would expect in an AR-15 rifle. From standard carbine handguards to a forward assist A3 upper receiver, this rifle is ready to go right out of the box. Another great benefit of this rifle for us NY residents is that it can be ordered right from the factory as a NY-compliant AR-15 rifle. In fact, the one that Allstar Tactical lent us was already NY-compliant. The benefit of this is that there is no extra costs for pinning the stock or the muzzle brake.
Another great feature for the Model 8 is that it comes with a pair of $200 flip-up iron sights from Midwest Industries. Midwest industries is highly regarded for their Back Up Iron Sights (BUIS) and other AR-15 accessories. Including these with the rifle only makes the price-point of the Model 8 that much more attractive!
We tested the rifle with 55gr Armscor 5.56 surplus Ammo, also donated by Allstar Tactical, and found that every round fired flawlessly. No failure-to-feed’s, no failure-to-eject’s, and certainly no jams of any sort. I was also very surprised at the accuracy of the rifle, even when using surplus ammunition. I was able to average 3-4″ groups at 50 yrds using iron sights, and I’m not that great of a shot!
So, great accuracy and ridiculous reliability combined with an MSRP under $1150 produces the Stag Arms Model 8 Gas Piston rifle, an AR-15 for the masses. Manufactured in the USA (Connecticut), the Model 8 also comes in a hard plastic case, and carries Stag Arms’ standard warranty. I would have to say that I definitely recommend this rifle to anyone looking for a gas-piston AR-15 and doesn’t want to break the bank!
|Caliber:||5.56 NATO Chamber|
|Upper:||Forged and Mil-Spec|
|Sights:||Midwest Industries Front & Rear Flip Up|
|Barrel:||16″ Chrome-Lined, 1:9″ Twist|
|Stock:||6 Position Collapsible (Pinned for NYS)|
Many people, who ask me about building their own AR-15, always seem unsure about which barrel twist to get for their rifles. Hopefully this mini article will help you guys figure out what is best for your needs.
In general, rifling twist rate determines the optimum weight of the bullet for a given caliber. It also determines the speed of the bullet by preventing any yaw or pitching. Rifling twist is measured in the number of revolutions per inch of barrel. For instance a 1 in 9″ twist means that the bullet made one revolution while traveling 9″ down the barrel.
So, what is the best twist rate? Well the answer nobody wanted is, “It Depends!” 🙂 A good rule of thumb is that the more weight or longer the bullet is, the faster the twist rate has to be in order to stabilize the bullet. Also, in general, lighter/shorter bullets can usually be fired in barrels with faster twist rates, but heavier/longer bullets cannot be fired in barrels where the twist rate will be too slow. Let’s examine this in more deatail as it relates to AR-15’s.
The original M-16 started off with a 1 in 14″ twist rate which is good enough for bullets around 55gr. However, when temperatures dipped below freezing, the density of the air caused the bullets to lose their spin, resulting in much less accuracy. In order to solve this problem, the military adopted a twist rate of 1 in 12″. The SS109/M855, which is 62gr, required a 1 in 10″ rate to stabilize, but the military settled on a 1 in 7″ rate due to the need to fire the heavy and long tracer rounds.
What does this mean for the civilian AR-15 enthusiast? Well, considering most barrel manufacturers produce their barrels in both 1 in 9″ and 1 in 7″, choosing either will not hurt the performance of the rifle for the majority of shooters out there. If you think you will be shooting the heavier grain bullets or tracer rounds, then it is probably safer to pick a 1 in 7″ twist rate barrel.
I hope that this short article on AR-15 barrel twist rates helped clear up some information! Please feel free to leave us some comments or questions if you would like more information!
One of our vendors, Allstar Tactical, is holding an AR-15 lower receiver group buy for Spikes Tactical ST-15 Lower Receivers. The price is only $95 each for nyfirearms.com members.
Check it out here:
Spikes Tactical Lower Receivers Group Buy – NY Firearms Forums
On 2/27/09 Bill number A06294 was referred to codes. This bill revises the current state assault weapon ban making it more strict. Significant changes include making the list of banned features larger which includes a muzzle brake or a vertical front grip. It defines assault weapons as having one of those features as opposed to one being allowed under the current ban. Detachable magazine is defined as “…can be removed from the firearm without use of any tool including a bullet or ammunition cartridge.” Any firearm classified as an assault weapon under the new law would require the gun to be rendered inoperable, turned in to law enforcement or registered in a database created by the law.
This bill is very similar to the ban that was introduced last year and died in the senate. With the democratic control of the state government this one may pass. Please write your representative and encorage them to oppose this bill.