Troy's BattleRails with M-LOKA(R) cooling holes are narrow, sleek and provide exceptional balance and controllability. Lightweight with an ultra-low profile, snag-free design, they are ideal for close quarters maneuverability. Machined from hardened aircraft aluminum with stainless steel components and finished in Mil-Spec hardcoat anodizing, they mount to a standard barrel nut. Mfg: Troy Industries