14.5" M4 1:7 5.56 NATO LT PROFILE
Barrel Length: 14.5"
Caliber: 5.56 NATO
Cobra Tactical Replacement Barrel 14.5" 5.56mm NATO M4, Mid-Length Gas Length, 1:7 twist, fully machined with extension and index pin and gas port drilled to spec. Made from 41V50, chrome lined bore and chamber for optimum performance and durability. Muzzle threaded 1/2x28. Barrel is finished in black manganese phosphate / parkerized finish.