USED Rugged Suppressors M2 Brake 1/2in-28 Tpi Threads Dual Taper Lockin MB014. The M2 Brake features our Dual Taper Locking System. The M2 Brake ideal for rifles along with lever guns and pistol caliber carbines with the Alaskan360 series or Obsidian45/Obsidian9 with the Obsidian Dual Taper Mount. The M2 Brake is compatible with standard wrenches and recommended to be tightened to 20-25 ft pounds. Specifications for Rugged Suppressors M2 Muzzle Brake: Manufacturer: Rugged Suppressors Color: Black Weight: 1.5 oz Package Contents: Rugged Suppressors M2 Muzzle Brake Rugged Suppressors MB014: M2 Brake 1/2in-28 Tpi Threads Dual Taper Lockin