Douglas Barrel SPR/MK 12 17.9″
Shown above in Stainless. 17.9″ long
This barrel weighs approximately 2.5 pounds.
M4 Feed Ramps come standard. 1:7 or 1:8 twist
This barrel comes standard with M4 Feed Ramps, Rifle gas system, 1/2-28 threaded muzzle, and the proper OPS, Inc. muzzle contour for OPS, Inc. collar.