.450 Bushmaster Barrel Only


SKU: 458-BO-MW-1 Category:


If you experience feeding problems with your upper, 99% of the time, the issue is due to the customer using a sub-standard bolt from an alternate manufacturer. The construction of the bolt, extractor, and ejector are all extremely important for proper feeding of the 450 Bushmaster cartridge.

Includes complete ready-to-install barrel made from 4150 Carbon Steel.
Barrels are available in 16.25″ and 18″ black finish only, dimpled for gas block screw alignment.

Light-Weight barrel profile is 790″ under the hand guards, .750″ at the gas block, and .730″ at the muzzle.  1:24 twist with the muzzle threaded 11/16-24

16″ Barrels use a carbine length gas system.

18″ Barrels use a mid-length gas system.

16.25″ light-weight barrel weights 1.52 pounds

18″ light-weight barrel weighs 1.70 pounds





Additional information

Barrel Length/Profile

16.25” Mid-Weight, 16.25" Light-Weight, 18" Light-Weight