Douglas 5.56 Stainless Steel MK12 Mod 0 Barrel 18" 1-8 Twist

Douglas MK12 Mod 0 18" 416 stainless steel barrel with 1-8 twist and M4 feed ramps.  Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread forthe AE  brakes and collar.   This is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. Barrel uses a rifle length gas system and is chambered in 5.56 Nato