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Posts Tagged AR-15
Is it Time for the 6x45mm Cartridge?
Is it Time for the 6x45mm Cartridge?
Patrick Sweeney takes a new look at this 1960’s wildcat for the AR platform in his 2010 book The Gun Digest Book of The AR-15 Volume 3
Below is an excerpt.
By Patrick Sweeney
The original caliber for the AR-15 wasn’t the .223/5.56, it was a slightly smaller cartridge. The .222 Special delivered the kind of performance that the designers wanted, which was basically a 50-grain bullet at under 3,000 feet per second.
The Army, trying to keep the AR away and keep the M14 in the running, kept moving the goalposts. Finally, they insisted that the bullet used had to penetrate a steel helmet at a distance farther than their own research had indicated soldiers fired on opponents. The special got stretched and boosted, until the 55-grain FMJ was at 3,100 fps.
And there it stood, until the mid-1980s, when the SS109 came about. That was intended for use against swarms of Soviet infantry in Western Europe. What, there never were swarms of Soviet infantry in Western Europe? Musta worked.
Seriously, the expectation was that the Soviets would roll West, and the NATO allies would be faced with Russian, East German, Polish and who knows who else mechanized infantry piling out of their BMDs, BMPs, and BTRs, lining up and assaulting the NATO positions. They expected to face lots of targets, and not only armed ones, but armored infantry. So, the push was for armor-piercing performance, leading to the SS109 and the later M-855, with a 10-grain steel penetrator tip inside.
How to Build An AR-15 – Video
Posted by Gary in Long Guns, Training Videos, Warrior Tools on 12/Jan/2011 16:10
From: Brownells
The AR-15 is one of the most adaptable rifle platforms in history, and building one is easier than you think. Brownells has produced a comprehensive series of easy to use web based video instructions on assembling an AR-15. We cover the all the parts, variations, subassemblies, tools and complete building of the rifle so you can feel confident to tackle this project on your own. A PDF check list helps you with; parts to order, instructions and list of tools that you will need.
Broken down into short easy to follow instructions for each step, you’ll be able to watch only those segments that pertain to your rifle and not be bogged down with a lot of extra details.
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Discussion of the merits, pros & cons of AK-47 versus AR-15
Posted by Jack Sinclair in Opinion on 20/Sep/2010 03:06
This is a fairly extensive and objective comparison of the two platforms; pretty helpful.
New Rock River Arms Piston Carbine with Folding Stock
Posted by Gary in Long Guns, Rock River Arms, Warrior Tools on 1/Sep/2010 16:19
Available Now.
First-look video of Carbine and Pistol PDS from 2010 Shot Show.
From: Rock River Arms
PDS-Carbine
Rock River Arms started engineering a piston system over two years ago and are now introducing that system. The new PDS (Piston Driven System) Carbine is reliable, every time.
The Rock River Arms PDS Carbine and Pistol are the first of a new generation of firearms employing Rock River Arms’ patent-pending Piston Driven System (PDS). Utilizing a purpose-designed bolt carrier, an adjustable gas piston and an over-the-barrel spring and guide rod arrangement, the Rock River Arms Piston Driven System is able to completely do away with the traditional recoil system, making for an extremely accurate, fast-handling and versatile weapon platform. Read the rest of this entry »
New Rock River Arms 5.56 Pistol
Posted by Gary in Handguns, Rock River Arms, Warrior Tools on 31/Aug/2010 14:34
From: Down Range TV
The Rock River Arms PDS Pistol is the first of a new generation of firearms employing Rock River Arms’ patent-pending Piston Driven System (PDS). Utilizing a purpose-designed bolt carrier, an adjustable gas piston and an over-the-barrel spring and guide rod arrangement, the Rock River Arms PDS is able to completely eliminate the traditional recoil system associated with AR-style firearms, making for an extremely versatile weapon platform. The design of the upper receiver and guide rod base prevents gas blow-by to the back of the receiver. The two position adjustable regulator is conveniently positioned on the right side of the regulator housing.
The New PDS Pistol has a full length top mounting rail from the rear of the receiver to the regulator housing, allowing flexible placement of numerous optics, lights, lasers and other accessories. The folding ambidextrous, non-reciprocating charging handles may be used independently or in unison to charge the RRA PDS Pistol. The RRA PDS Pistol features a MS1913 rail on the rear receiver adaptor as well as an MS1913 rail on the regulator housing which allows sling or weapons mounting capabilities. The handguard features an integral Operator Safety Flange to help prevent support-hand movement/slippage towards the muzzle.
GPS Grip Pod 02 Forearm Bipod Grip
Posted by Jack Sinclair in Accessories, Long Guns, Warrior Tools on 29/Aug/2010 15:10
New Ruger SR-556C Piston Carbine
Posted by Gary in Long Guns, Ruger Long Guns, Warrior Tools on 18/May/2010 13:16
Press Release
Sturm, Ruger Introduces The SR-556Câ„¢ Piston Driven Carbine With A Shorter, Lighter Barrel
Ruger SR556C
Southport, CT: May 13, 2010 – Sturm, Ruger & Co., Inc. (NYSE:RGR) is pleased to announce the introduction of the new Ruger® SR-556Câ„¢, a carbine-length derivative of the popular SR-556 two-stage piston driven AR style rifle. The new SR-556C features a heavy contour, fluted barrel that is 1-3/4″ shorter and a half-pound lighter than the original SR-556.
The 16.1″ barrel on the new SR-556C features an integrally machined flash suppressor, which minimizes the overall length of the barrel while maintaining compliance with ATF regulations for civilian and commercial sales. The SR-556C maintains the mid-length gas system and the heavy (.850″) barrel contour under the handguard of the original SR-556, however the barrel under the handguard is fluted for weight reduction and to promote barrel cooling.
“Many of our customers appreciate the limited muzzle rise when shooting the original SR-556, which allows them to re-acquire their sight picture more quickly between shots,” said Todd Wilkinson, Ruger’s Chief Engineer for Rifles. “However, some customers requested a shorter, lighter, faster handling gun that can more quickly acquire separate targets. This new SR-556C drops a full half pound off the front end of the gun, which changes its handling dynamics considerably, something our customers are really going to appreciate.”
The SR-556C offers the same great features that made the original SR-556 such a success: it includes the two-stage piston driven operating system with a four position adjustable gas regulator; chrome plated, cold hammer forged barrel; Troy Industries Folding Battlesights, Quad Rail, and rail covers; chrome plated bolt carrier group and operating system, six-position stock, Hogue® Monogrip® and three 30-round MAGPUL PMAG™ magazines.
For more information on the SR-556C, or any of the other rifles, pistols, or revolvers offered by Ruger, please visit www.Ruger.com, or visit your local firearms retailer.
ATC Drop-in AR Trigger
Posted by Gary in Accessories, Custom, Gear on 24/Feb/2010 16:22
AR-15/M16 .22 Conversions – CMMG
Posted by Gary in Accessories, Training Tools on 21/Jan/2010 15:25