The LB is the little brother to the FB. We needed a smaller platform for rifles that couldn't handle a large brake. The LB can be turned down .850 diameter to blend completely as if it were an integral part of the barrel a non magnum cartridge. Magnum cartridges should not be turned down. The brake should be left 1.0" in diameter and chamfered on the end to blend into the barrel.
All of the Gen 1 require installation by a competent gunsmith. By properly fitting this brake you can achieve a perfect seamless fit on your rifle as well as perfect coaxial bore alignment. Please see the video for further information.
The LB is a perfect fit for barrels .750 -1" inches in diameter at the muzzle. This brake is 1'' in diameter and should not be turned down less than .925". Overall length is 2.225"