The general purpose behind a muzzle brake is to reduce the recoil of your rifle. In order to do that efficiently, the ports of the brake have to be properly aligned/timed. This article will guide you through this process.
If you're looking for a quick detach method to attach your Obsidian9/45 to your subgun or PCC, the 3 Lug Mount is the solution for you. In addition to it's quick detach benefits, the 3 Lug Mount prevents any walk off.