The Great Lakes Firearms and Ammunition low profile AR-15 gas block fits barrels with a .750" diameter. It is precision machined from chrome moly steel and does not include the gas tube or roll pin. A low profile gas block such as this one is perfect for a new modern sporting rifle build, or for upgrading an existing rifle when adding a free float handguard.

Specifications and Features
Great Lakes Firearms and Ammunition GLFA750
Low profile
Fits .0750" barrels
Chrome moly steel
Black