American Precision G4L5830N Gen 4 Little Bastard Self Timing Muzzle Brake 5/8x24 / .30 / Nitrided The American Precision Arms Gen4 Little Bastard SelfTiming Muzzle Brake G4L5830N is a nitrided steel device designed for .30-caliber rifles with 5/8×24 threading. APA G4L5830N features APA’s self-timing system for fast, tool-free installation and precise alignment. Tunable top ports and a refined Bastard port with internal gas manifold significantly reduce recoil and muzzle rise, delivering a flatter, more comfortable shooting experience. APA proudly introduces the Gen 4 Fat Bastard and Gen 4 Little Bastard—the latest evolution in muzzle brake technology. The APA Gen 4 Muzzle Brake represents a fusion of advanced engineering enhancements and valuable user feedback. As the long-range precision rifle community continues to grow and evolve, so do the expectations of today’s more refined and discerning shooters. These demands have challenged APA to innovate further—and the Gen 4 is the result of that commitment to performance and precision. American Precision Arms Gen 4 Little Bastard Self Timing Muzzle Brake 5/8x24 / .30 / Nitrided G4L5830N