Daniel Defense Big Hole Upper Receiver w/ Feed Ramps 04-012-09001. 315 front pin hole to fit the early Colt lowers with .315 front holes. This eliminates the need to use an offset pin which requires 2 screwdrivers during assembly / disassembly of...
Daniel Defense Big Hole Upper Receiver w/ Feed Ramps 04-012-09001. 315 front pin hole to fit the early Colt lowers with .315 front holes. This eliminates the need to use an offset pin which requires 2 screwdrivers during assembly / disassembly of...