The GLFA Optimus Muzzle Brake greatly reduces felt recoil and muzzle rise, permitting faster follow-up shots and increasing operator comfort. It is precision machined from stainless steel. It fits any AR-15 chambered in 6.5 Grendel with a barrel threaded 5/8"x24 muzzle threads. Great Lakes Firearms and Ammunition produces top end shooting accessories and is also an ammunition manufacturer specializing in exotic ammunition.

Specifications and Features
Great Lakes Firearms and Ammunition 65RUMB
6.5 Grendel
Stainless Steel
Reduces felt recoil
Reduces muzzle rise
5/8"x24 threads
Black Oxide Finish