The DMR rifle is powered by a low profile rifle-length gas system. But the gun’s real focal point is underneath it. And that’s its 18” long barrel made of 416 stainless steel bar stock. This type of stainless steel is very affordable and easy to work with. Best of all, it gains strength as it is heated. The barrel has a medium contour and is beautifully fluted and has a 1 to 8” twist. In front is a two-chamber APF Butcher 16 muzzle brake that’s made in-house.