The American Precision Firearms G2L5830S is part of the Generation 2 Series which incorporate a unique design element - a separate fastening nut. This distinct feature makes it possible for you to conveniently install the brake right at your home, freeing you from the hassle of managing unappealing crush washers or peel washers, typically associated with such installations.With a sleek completion time of about just 30 seconds, you get mastery craftsmanship with utmost convenience. The brake is precision engineered from top-tier stainless steel, demonstrating our commitment to quality and durability.Suiting barrels between .750 and 1.0 inch in diameter at the muzzle, the LB signifies the ideal fit. Experience the perfection in function and fit with the American Precision Firearms G2L5830S.