Red X Arms AR-15/M16 5.56x45mm Stainless Steel barrels are an efficient and accurate option for your next build. HBAR profile and stress relieved 416R stainless steel provide superior rigidity and accuracy. The M4 feedramps and 1-9 twist allow for reliability and accuracy with a wide range of ammunition. Available in 16” or 20” lengths, with the shorter barrels featuring a carbine length gas system, while the 20” has a rifle length gas system. Barrels are available fluted or in a standard configuration. Muzzle is threaded ½-28 and the gas shoulder OD is .750”.
AR-15, Issue:10, Page:018
SPECS: Stainless steel, HBAR. O.D. at Gas Port - .750”. 5.56 – ½-28 muzzle threads, 1-9 twist, 16” & 20” lengths. 300 BLK – 5/8-24 muzzle threads, 1-10 twist, 16”.