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CMMG AR-15 Evolution Sierra Complete Upper Assembly .22 LR 16 Barrel Low Pro Railed Gas Block Flat Top Receiver Black WASP Finish No Magazine
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CMMG AR-15 Evolution Sierra Complete Upper Assembly .22 LR 16" Barrel Low Pro Railed Gas Block Flat Top Receiver Black WASP Finish No Magazine
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Manufacturer: CMMG, Inc. 22B7CC2
Item: 2-CMMG22B7CC2
UPC: 852005002981

The Sierra .22 Caliber AR-15 upper maintains compatibility with all the same parts and accessories that fit your full caliber AR's, including the lower receiver.

Comes with non-functional forward assist plug. May be upgraded to fully functional forward assist by upgrade below.

Specifications and Features:
Black Phosphated .22 LR Action
16 inch W.A.S.P. steel barrel
1:16 inch twist
Carbon Steel Barrel
Mil-Spec 1/2x28 threaded muzzle
Piccatinny Railed, Low Profile Front Sight Base
Live Round Extraction
Anti-Jam Charging Handle
Firing Pin retained by standard AR15/M16 Cotter pin
Mil-Spec Anodized & Teflon Coated
A2 Flash Hider
Gas Deflector
Low Profile Single Rail Gas Block
Upper does not come with a magazine
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Average Customer Rating: 3.5 Rating (2 Customer Reviews)  Write a Review!
Page 1 of 1 (2 Reviews)
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2.0 Rating Not very reliable - 11/30/2012CMMG AR-15 Evolution Sierra Complete Upper Assembly .22 LR 16" Barrel Low Pro Railed Gas Block Flat Top Receiver Black WASP Finish No Magazine2.0000
Reviewer: Unsatisified
Got it to shoot cheap .22 LR instead of .223. So far, it does not work well with Golden bullets or Federal auto match or Winchester bulk ammo. I haven't tried CCI yet, but the reason I got this was to shoot cheap bulk .22 LLR ammo. For this price, I hoped it would function well, but so far I'm not impressed. Now I'm thinking I should have gotten a different .22 LR gun, like the GSG-5 or Ruger 10/22. Both were less than $350 and maybe they would function with cheap bulk .22 LR ammo.
5.0 Rating Quality - 10/17/2012CMMG AR-15 Evolution Sierra Complete Upper Assembly .22 LR 16" Barrel Low Pro Railed Gas Block Flat Top Receiver Black WASP Finish No Magazine5.0000
Reviewer: sh066
Awesome quality upper is machined aluminum, not polymer, which is great.
 
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CMMG AR-15 Evolution Sierra Complete Upper Assembly .22 LR 16 Barrel Low Pro Railed Gas Block Flat Top Receiver Black WASP Finish No Magazine
CMMG AR-15 Evolution Sierra Complete Upper Assembly .22 LR 16 Barrel Low Pro Railed Gas Block Flat Top Receiver Black WASP Finish No Magazine		x