16” A/R Barrel with Extension,1:8 Twist


Available on backorder

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Product Description

Green Mountain M4 16″ 5.56mm NATO 1:8 Twist, fully machined and assembled with extension (with m4 feed ramps), chrome lined bore and chamber, phosphated, 41V50 milspec vanadium steel, thermo-stress relieved, air gaged,drilled gas port, muzzle threaded 1/2 x 28. Designed for carbine length gas system, weighs 1.8 lbs…  Barrel is not pinned for front site.


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