The front sight from DPMS adds three additional rails to the standard front sight body. These three new rails, located at the 3, 6, and 9 o'clock positions have been machined into the investment cast 4140 steel front sight body and feature four slots per rail. This front sight also features a machined sling loop located in the rear support leg of the sight. Retaining the same height as the standard A2 front sight, this manganese phosphate finished sight is held to the barrel with two taper pins. Sporting a .750 diameter barrel opening, this front sight will fit standard heavy barreled rifles (5.56x45mm), AP4 Carbine models as well as the LR-308T - the 16 inch heavy barreled 308 caliber rifle from DPMS.