Magpul PDR

The Magpul PDR, short for Personal Defense Rifle, is a prototype bullpup-style carbine chambered for the 5.56x45mm NATO cartridge, unveiled by Magpul Industries in 2006. It was intended to replace some submachine guns, M9 pistols and M4 carbines while still offering the rapid fire and range of an M4 in an ultra-compact firearm. It is one of the few personal defense weapons designed around a standard rifle caliber, to simplify logistics. It uses a short-stroke gas piston, is striker-fired and has ambidextrous controls and ejection. Two variants were shown: the PDR-C, with an FN P90-style pistol grip for a more compact weapon, and the PDR-D, with a more conventional grip and a vertical foregrip. Development was halted in 2011, but the rifle has since drawn attention for its futuristic appearance.