Brownells - AR-15/M16 One O'clock Offset Rail
This guide details the installation of the Daniel Defense 1:00 Offset Rail on AR-15 and M16 platforms. The rail allows for the convenient mounting of auxiliary optics, lights, and accessories at the 1:00 or 11:00 positions, enabling rapid transitions between primary and secondary aiming devices. It can also be mounted on the underside for lasers or lights, positioned near a vertical grip for ergonomic control. The system features a sidebar and crossbolt locking mechanism for secure zero retention.












