January 30th, 2017

How an AR15 Works — Cool 3D Cutaway Animation Video

ar-15 AR15 3D animation video youtube cutaway 5.56 AR .233 Rem

Ever wondered how the parts inside an AR15 work together? Just exactly how does the reciprocating bolt carrier feed rounds from the magazine? How do the elements in the trigger group work and reset after each shot? How does the gas system bleed gas from the barrel and operate the bolt carrier? These and other questions are answered in this eye-opening video from 45Snipers. Using “cutaway” 3D computer animation, this 5-minute video shows all features of an AR15 inside and out. This fascinating firearms animation allows the viewer to look inside the upper and lower receivers, into the bolt carrier, chamber, barrel, and magazine.

This video starts off slow and has annoying background music, but it is well worth watching if you own or shoot any AR-platform rifle. It illustrates all the key operations during the charging, loading, firing, and ejection processes. The cutaway animation shows how rounds are stripped from the magazine and then chambered. It then shows how every part of the trigger group works, and how the firing pin strikes the primer. You can even watch the bullet move down the barrel before the empty shell casing is removed from the chamber and tossed out the ejection port. Here are sample frames from the video:

ar-15 AR15 3D animation video youtube cutaway 5.56 AR .233 Rem

ar-15 AR15 3D animation video youtube cutaway 5.56 AR .233 Rem

Video find by Grant Ubl. We welcome reader submissions.
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January 6th, 2017

Savage Turns to the Dark Side — Introduces AR-Type Rifles

Savage AR15 AR10 AR-10 Black rifle AR MSR Modern Sporting Rifle

Savage Arms has joined the black rifle bandwagon with its new MSR Series of gas guns. Savage will offer four AR-style semi-automatic rifles in 2017. Savage will offer a variety of buttstock configurations, barrel lengths, along with some interesting chambering options. The MSR 15 Patrol and Recon feature a .223 Wylde target chamber for use with 223 Rem. or 5.56x45mm. The MSR 10 Hunter and MSR 10 Long Range models are AR-10 platform rigs offered in 6.5 Creedmoor and .308 Win chamberings. The top-of-the-line MSR 10 Long Range model carries a hefty $2284 MSRP price-tag, but it does include a two-stage AR Blaze target trigger, adjustable gas block, and a genuine Magpul® PRS Gen3 buttstock.

While most of the engineering of the MSR series is classic AR, there are some interesting features and notable upgrades. The MSR 10 Long Range offers a non-reciprocating, left-side charging handle (along with conventional rear charging handle). All the MSR rifles have high-quality barrels with a durable surface hardening treatment known as Melonite QPQ. This should make the rifles run longer (with higher round count) before needing replacement barrels. Bill Dermody of Savage states: “These are high-performance barrels you’d have to buy as an upgrade with standard AR-15s.”

Savage MSR Notable Features:
Non-reciprocating SIDE charging handle on MSR 10 LR (plus normal charging handle)
1:8″-twist Barrels, Melonite QPQ hardening, 5R rifling (MSR 15 Patrol and Recon)
1:8″ or 1:10″-twist Barrels, Melonite QPQ hardening, 5R rifling (MSR 10 Hunter and LR)
Conventional AR-Type Gas System (No Op Rod)
Adjustable Gas Block (MSR 10 Hunter and LR)
Modular-Style Fore-end/Handguard
Flip-up Front and Rear Sights

Field Test of Savage MSR 15 Patrol
YouTube ace .22 Plinkster got his hands on one of the very first Savage MSR 15 Patrol M4 models. In this video, he tests it for function and accuracy, finding the MSR 15 to be “a good shooter”. He adds: “The Patrol is Savage’s entry-level M4. Because this rifle is brand new … you may want to check out Savage’s website at www.SavageArms.com.”

Savage AR15 AR10 AR-10 Black rifle AR MSR Modern Sporting Rifle

This Twang ‘N Bang video explains the key features of the MSR 10 Long Range, including the side charging handle and QPQ-treated barrel. It also describes the specs of the other three models.

Savage’s new MSR 10 Hunter and MSR 10 Long Range are purpose-built modern sporting rifles for game hunting and long-range shooting. Both are available in .308 Winchester and 6.5 Creedmoor chamberings. Both models are built on compact, lightweight frames and feature adjustable gas blocks, plus the MSR 10 Long Range is equipped with a non-reciprocating, side-charging handle (see below).

Savage AR15 AR10 AR-10 Black rifle AR MSR Modern Sporting Rifle

On the AR-15 platform, the new MSR 15 Patrol and MSR 15 Recon are chambered in .223 Wylde for safe, reliable function with both 223 Rem. and 5.56x45mm ammo. All Savage MSRs offer premium features such as 5R button-rifled barrels with Melonite QPQ surface hardening, new BLACKHAWK! furniture, upgraded sights and more. To learn more about Savage’s new line of MSR rifles, visit www.Savagearms.com/msr.

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August 25th, 2014

AR Ejector Mod For Improved Reliability with Larger Cartridges

TECH TIP by Robert Whitley, AR-X Enterprises LLC
Over the years, while working with various AR-15 cartridges that require a larger bolt-face bolt (i.e. bigger than a 5.56 NATO/.223 Rem bolt-face, like those cartridges that use a 6.8 SPC bolt or the bolt face suitable for the 6.5 Grendel-based cartridges), I have found that there is an increased potential for a certain type of jam if a modification to the standard “Mil-Spec”, square-edged ejector is not made.

The original AR-15 square-edged ejector design was made for a much smaller-diameter bolt face and the smaller diameter 5.56 NATO/.223 Rem case, and it works perfectly in that application. However, as people have adapted the AR-15 platform to shoot bigger cartridges, some parts have been modified to accept the larger cartridges (i.e. bigger bolt-face bolts for the 6.8 SPC and the 6.5 Grendel, and different extractors), yet other parts have been all but ignored. One of these “ignored” parts has been the ejector. Most of the larger-bolt-face AR-15 bolts still use the standard “Mil-Spec”, square-edged 5.56 NATO/.223 Rem. ejector. That’s the problem. But there is a simple, reliable fix!

Robert Whitley AR-X Enterprises AR AR15 Bolt jam fix ejector mod

Chamfering AR Ejector for Improved Reliablity with 6mm, 6.5mm and 6.8mm Cartridges
With the larger bolt face and the larger-diameter AR cases, the old-style “Mil-Spec” ejector can cause infrequent but still annoying jams if the ejector is not modified. The jam can occur when a cartridge case feeds up and out of the right side of the magazine, and as it does so, the back of the case must slide across the bolt face and sideways over top of the ejector if it is to center up to the chamber and feed in. If the side of the case catches on the sharp-edged ejector you can get a jam. (See picture above).

Fortunately there is an easy fix for this. One way is to take the ejector out and spin it in a lathe or cordless drill and machine or grind it and round or chamfer the sharp edge. (See picture of rounded ejector next to square edged ejector).

Robert Whitley AR-X Enterprises AR AR15 Bolt jam fix ejector mod

Quick Fix Alternative — Bevel Your Ejector
Another “quick fix” is to leave the ejector in the bolt and chamfer the sharp edge with something like a Dremel tool. (See picture). This fix is easy to do and permanently resolves this potential feeding jam issue. There are no downsides to this modification if done right and I would recommend this modification for the ejectors in all larger bolt-face AR-15 bolts.

Robert Whitley AR-X Enterprises AR AR15 Bolt jam fix ejector mod

Robert Whitley AR-X Enterprises AR AR15 Bolt jam fix ejector mod

This gunsmithing tip provided by Robert Whitley of AR-X Enterprises LLC, 199 North Broad Street, Doylestown, PA 18901. Phone: (215) 348-8789. Website: 6mmAR.com.

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June 16th, 2014

ARs by the Numbers (Stats on Modern Sporting Rifles)

Who is buying ARs and AKs, and in what quantities? Jim Curcuruto, NSSF’s Director of Industry Research, answers those questions in the May 2014 Issue of AR Guns & Hunting. In this interesting article about “Modern Sporting Rifles” (MSRs), Curcuruto provides answers to questions such as “How many Americans own an MSR?”, “Why are they being purchased?”, and “Who is buying them?”.

What the Heck is a ‘Modern Sporting Rifle’?
The term “Modern Sporting Rifles” is used to describe “AR- and AK-Platform rifles” — semi-automatic rifles with detachable box magazines. These are generally derivative of the original AR15/M16 or AK47 designs, although Modern Sporting Rifles may have different furniture, modular components, and scope rails in place of iron sights. Note: The “AR” in “AR-15″ rifle stands for ArmaLite rifle, after the company that developed it in the 1950s. “AR” does NOT stand for “assault rifle” or “automatic rifle.”

Modern Sporting Rifle AR15 AK47

MSR Questions and Answers

Q: How may AR-type and AK-type rifles have been sold in recent years?

We don’t have an exact sales number. However, since 1990, over 8,200,000 MSRs have been “brought to market” in the USA. This is based on manufacturing stats, ATF sales records, as well as International Trade Commission (ITC) import numbers.

Modern Sporting Rifle AR15 AK47Q: How Many Americans Own MSRs?

A: 4.8 million American have an AR-type or AK-type rifle, according to a consumer survey and ATF and ITC statistics.

Q: What Kind of People Purchase MSRs?

A: MSRs are purchased by successful, educated people: “The average MSR owner is 35+ years old, married and has at least some college education. 54% of MSR owners have a household income of more than $75,000 and they are spending approximately $1,060 on each MSR[.]” Roughly one-third of MSR owners are active or former law enforcement or military personnel.

Q: Why Do People Purchase ARs and AKs?

A: The main reason Americans purchase MSRs is for “recreational target shooting”. The second most important reason is for home defense.

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