Forward Controls Design 6315KM, Long (2.7"), 1/2x28 - 6315KM-L

The Forward Controls Design 6315KM-L is the extended-length version of FCD's 6315KM, designed around compatible 13.9-inch 5.56mm barrels and the Dead Air KeyMo suppressor mounting system. Threaded 1/2x28, the 6315KM-L measures approximately 2.7 inches long, giving it the added length needed for certain pinned-and-welded configurations while retaining the flash suppression and muzzle-control characteristics of the 6315 family. Its asymmetric port geometry directs more gas through the upward-facing ports, helping improve muzzle-rise control without turning the device into a harsh, high-concussion brake. Forward Controls Design states that the 6315KM-L provides approximately 15% to 20% better muzzle-rise compensation than a standard A2 while maintaining flash suppression comparable to an A2. The integrated Dead Air KeyMo interface allows the 6315KM-L to serve as a mounting point for compatible 5.56mm suppressors that use the KeyMo system. FCD is an authorized licensee of Dead Air suppressor mounts, making the 6315KM-L a purpose-built option for shooters who want a compact flash suppressor, compensator, and suppressor mount in one component. Machined from 4140 steel bar stock, heat treated, and finished with a durable QPQ coating, the 6315KM-L weighs approximately 3.87 oz. It is also drilled for pinning and features integrated wire-cutter alignment notches ahead of the side ports.