The new Ferfrans CQB Modular Muzzle Brake System is a two part system consisting of the performance MUZZLE BRAKE MOUNT + CRD (Concussion Reduction Device) which features a built in quick attach/detach mechanism. The difference between the Gen 1 and Gen 2 is that, the muzzle brake mount (MBM) will now accept the OSS Suppressor as well as the CRD.
After firing several rounds, the Gen 1 locking lug gets frozen with the carbon deposit and it can no longer be removed. As you know, famous suppressors get stuck too and some suppressor company even suggest firing a round to remove the suppressor. The Gen 2 reverse threadis easy to remove after firing either suppressor or CRD. New Gen2 Features
The surface is now Black Oxide. The circumference is reduced so that it will match most handguards. Slightly lighter than the Gen 1 The connector is reverse thread instead of the locking lug. More holes on the CRD body for better control in full-auto compared to Gen 1. Threads: 1/2x28 MADE IN USA