CMMG, Inc Upper-Sierra .22LR 16", No FSB 22B7CC2

Sierra .22 LR Upper Receiver w/Low Profile Railed GB

.22 Evolution Sierra Dedicated Upper

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.

- Black Phosphated .22LR Action
- 16 inch W.A.S.P. steel barrel
- 1:16 inch twist
- Carbon Steel Barrel
- Mil-Spec 1/2x28 threaded muzzle
- Picatinny Railed, Low Profile Front Sight Base
- Live Round Extraction
- Anti-Jam Charging Handle
- Firing Pin retained by standard AR15/M16 Cotter pin
- Mil-Spec M4 Receiver with Ceramic Finish
- A1 Flash Hider
- Gas Deflector
- Low Profile Single Rail Gas Block

Patent Pending
UPPER DOES NOT INCLUDE MAGAZINE