A .338 and 8.6 Blackout compatible version of Rugged's lightweight M2 Brake. Their M2 Brake features their Dual Taper Locking System. This is the perfect small brake for your Alaskan360 or Alaskan360Ti. Want to use this brake with your 1.37524 threaded suppressor? No problem. Pair this M2 Brake with our R.U.M. (Rugged Universal Mount) and get your 8.6 Blackout or .338 fun going!