Rail Section, QARS, 5.4"

The Troy Quick Attach Rail Sections secures with two screws to a backer on the inside of certain Troy Rails. For use on Alpha, Delta, TRX 308, TRX Extreme, Troy HK rails and T-22 Sport Chassis, M7 Uppers and M7 Kit, the Troy Quick Attach Rail sections accommodate a full range of accessories and installing them solidly onto the rail. Available in Black.
Installation Instructions - PDF Download