This HK416™ M4 style barrel fits any HK416™ or MR556 rifle.
Inspired by the military issue HK416® carbines and their corresponding barrel, this M4 profile barrel fits HK416™ upper receivers and MR556® rifles. The barrels start with an authentic, original HK416™ barrel extension. Two inserts are included, which will work with any style of HK416™ upper receiver. Some HK416™ and MR556® uppers require a different sized index tab or pin, these barrels accommodate all! Barrels are produced in the US and feature a matte black Isonite finish. Barrel twist is 1-7, and are chambered 5.56x45mm NATO. Muzzle is ½-28. Barrels are laser marked in the German style.
Upgrade your MR556® to military styling or build your custom HK416™ clone today with these new production barrels.