Palmetto State Armory is your source for AR-15 parts and accessories! The Strike Industries Strike Rail is a lightweight M-LOK handguard for AR-15/M4 receivers, that was specifically designed to fulfill the requirements of agency partners. With dependability in mind, the SI Strike Rail features a built in anti-rotation feature, reinforced steel mounting nut and bolt, and an ambidextrous QD socket placement. Package includes: a (1) Strike Rail Handguard a (1) Mounting hardware and allen key a (1) Barrel nut a (1) Shim kit