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CMMG 16" SIERRA WASP Low Pro Railed Gas Block 22B7CC2

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CMMG 16" SIERRA WASP Low Pro Railed Gas Block 22B7CC2

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SKU: 12691
UPC: 852005002981
MFR# 22B7CC2

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CMMG 16" SIERRA WASP Low pro railed 22B7CC2

.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
  • 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


Patent Pending




SKU: 12691
SKU 12691
Brand CMMG
SKU: 12691