Barrel, 20″, AR, HBAR, Stainless, Criterion, 1×7.7 Match

Description Designed with service rifle and high power competition in mind, Criterion-manufactured Heavy Service Rifle and NRA Match contour barrels offer extreme accuracy potential for competition shooters. Uniformity of the bore, groove, twist, and a hand lapped finish improve the accuracy potential of each match quality barrel. The 1-7.7 twist on the 20 Heavy Service Rifle model allows for improved performance with heavier 80 gr. Sierra MatchKings without sacrificing the performance of lighter ammunition.   Specifications 20″ HBAR contour 1-7.7 Twist, 4 Groove .750 Gas Block 1/2 x 28 threaded .223/5.56 finished Wylde chamber by CBI M4 Barrel Extension Stainless steel, in the white (Target Gray matte finish available) *BARRELS & BOLTS MUST BE PROPERLY CHECKED FOR HEADSPACE PRIOR TO USE. FAILURE TO DO SO MAY RESULT IN FIREARM DAMAGE, PERSONAL INJURY, OR DEATH*