CMMG Bull Barrel WASP 223 Rem/5.56 NATO 16" 4140 Steel
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CMMG Upper Complete features .223/5.56, Flat Top, Free Float Tube 16" Bull Barrel, made of 4140 Chrome-moly vanadium steel with a 1:9 twist, and an 11 degree recessed target crown. The Forged M4 receiver is T marked and has M4 feed ram cuts and a Semi Auto bolt carrier.