Excellent Balance Between Strength & Weight Savings
Chambered in 5.56mm NATO, these medium profile barrels feature a 1-7 twist with 1/2"-28 muzzle threads, and accept .750" diameter gas blocks. Barrels are available in either 416 stainless steel or 4140 chrome moly steel with a nitride finish.Select either a 12.5" barrel with a carbine length gas system, 16" barrel mid-length gas system, or an 18" barrel with rifle length gas system.
AR-15, Issue:11, Page:018
Big Book Catalog, Issue:69, Page:017
SPECS: 4140 chrome moly steel or 416 stainless steel. Nitride black finish or stainless steel. 1/2"-28 muzzle threads. 750" OD Gas Block.