Each rail features anti-rotation tabs, M-LOK® slots for easy attachment of accessories, and a robust, reinforced QD socket on both sides of the rail for easy integration with your favorite rifle sling system. Featuring a muted, deep engraved Bushmaster® logo to round out any Bushmaster® build. The handguard is finished with Type III Hard Coat Anodizing, providing excellent corrosion and wear resistance, ensuring that it will withstand even the toughest of conditions. Included with the handguard is a steel barrel nut, a steel laser cut key seat, and two mounting screws. The handguard requires a 1-1/8″ wrench for installation. Proudly made in the U.S.A., the Bushmaster® AR15 BRAVO ZULU™ M-LOK® Handguard is a reliable and durable addition to any AR15 platform. Whether you’re a hunter, shooter, or simply an enthusiast, this handguard is sure to exceed your expectations.   Bushmaster® AR15 BRAVO ZULU™ M-LOK® Handguards are designed to be compatible with mil-spec upper receivers and may not be compatible with billet upper receivers without modification. Bushmaster® AR15 BRAVO ZULU™ M-LOK® Handguards are NOT compatible with Carbon-15 lowers. All modification is to be done by a qualified gunsmith.