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| Check out our new build of the week breakdown! | | |
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This week's build is another personal firearm from one of our staff here at Rainier. The purpose of this build was to create a hard use, short barreled AR pistol that balances well with a suppressor.
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| Built up on a Mega Arms upper receiver and Geissele 9.5 inch MK8 rail system, which is being featured for the second week in a row. For most hard use guns in the AR world, this rail system in its various lengths and colors is one of the most durable and high quality rails on the market. Offering superb rigidity and strength it is a trusted rail system used by both the military and police units around the country.
Internally, the rifle runs a mil-spec bolt carrier with a carbine length gas system. The barrel is a 10.5 inch Rosco bloodline barrel with a Silencerco ASR Brake fitted to the muzzle. When running a short barreled 556 rifle such as this, it can be beneficial to run with a break instead of a flash hider when going suppressed. Short ARs are notoriously hard on suppressors and the brakes gives you a sacrificial baffle to absorb the worst of the blast. Although, when running it suppressed, the blast is a bit mind numbing for those around you.
The suppressor used is a Silencerco Specwar 556 and something to note, when shooting this rifle with it attached does throw back a good amount of gas at the shooter. While the Radian Raptor SD does help some, it still can be annoying at times, especially if you are not used to it.
Riding on top, the rifle is fitted with a Vortex AMG-UH-1 holographic sight. So far, after three thousand rounds and numerous falls, drops, hard landings, and even a tumble out of the back of a truck, the optic has retained zero and held up quite well. The rear iron sight is from Midwest Industries and when paired with the Daniel Defense fixed front, would give the rifle a solid backup in case the main optic went down.
The other accessories riding the rail are a Streamlight HLX 1000 Lumen weapon light with a pressure pad. The pad itself sits in a Cloud Defense LCS, which is one of the best non-zip tie options on the market. Cable management can often be a problem when running a weapon light and the LCS does well to mitigate the issues and keeps everything decently tight to the rail. The Magpul MVG is used as a handstop, allowing the hand to pivot off of it and more easily activate the light’s pressure pad.
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| Moving to the bottom half of the rifle, is a matching Mega Lower receiver and PWS Enhanced buffer tube. KNS anti rotational pins keep the Geissele 2 stage (G2S) trigger where it should be and the Magpul K2 plus pistol grip gives the shooter a higher angled grip for better, more accurate shooting. The Geissele Super 42 buffer kit is a very popular offering for us and in this instance works very well with this rifle setup. The buffer itself has been given another tungsten weight which brings the full weight equal to an H2 buffer.
Lastly we have the SB Tactical SBA3 pistol brace. This brace took the rifle world by storm and continues to be one of the most popular brace options on the market. 5 position adjustable, capable of running on mil-spec buffer tubes, and available in black and FDE, this brace is a winner. One of the only gripes about this brace is the fact that it can sometimes split apart when being used, causing an uncomfortable or just plain annoying issue when shooting. This has been remedied by Lunar Concepts, and their Splitfix.
The Splitfix wraps around the brace, similar to the normal band it comes with, threads through the split portion and attaches back out to a piece of velcro on the outside. It shores up the brace and gives the shooter more stability and comfort when using the rifle. For $22, it is one of the best additions you can give your brace.
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| Like we’ve said before, the AR market is filled with all sorts of different options to kit out your rifle the way you want. Some people may want a more “Gucci” gun that stuns a crowd while others may want something more simple and subdued.
If your looking to build this rifle, or others like it, be sure to check out our website.
Look out next week for our next build breakdown.
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| Start your build today! | | |
| |  | | | MAGPUL | | | M-LOK MVG | | | VERTICAL GRIP | | | $21.81 | | | |  | | | MAGPUL | | | MOE+ | | | K2 GRIP | | | $23.70 | | | | | | | | | | | |
| |  | | | GEISSELE | | | AR-15 SUPER MODULAR | | | RAIL MK8 M-LOK - BLACK | | | As low as $225 | | | |  | |
PWS
| | | ENHANCED BUFFER TUBE | | | MIL-SPEC GEN 2, RATCHET LOCK ENDPLATE W/LOCK CASTLENUT | | | $93.46 | | | | | | | | | | | |
| |  | | | VORTEX | | | RAZOR AMG | | | UH-1 HOLOGRAPHIC SIGHT - 1 MOA DOT | | | $499.99 | | | |  | | SUREFIRE
| | | M600 ULTRA | | | SCOUT LIGHT - BLACK | | | $269 | | | | | | | | | | | |
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RADIAN WEAPONS | | | RAPTOR-SD | | | AMBIDEXTROUS CHARGING HANDLE AR10/SR25 - BLACK | | | $109.20 | | | |  | |
GEISSELE | | | G2S | | | 2 STAGE | | | $165 | | | | | | | | | | | |
| |  | | | GEISSELE | | | SUPER 42 | | | BRAIDED WIRE BUFFER & SPRING COMBO | | | $65 | | | |  | | | RAINIER ARMS | | | AR-15 | | | PRECISION MATCH GRADE BCG - NITRIDE | | | $169.95 $129.99 | | | | | | | | | | | |
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