Magpul PDR

The Magpul PDR (Personal Defense Rifle) is a prototype bullpup-style 5.56×45mm NATO carbine unveiled by Magpul Industries in 2006.

Although halted in development as of 2011 it has garnered some attention, largely due to its "futuristic" appearance.

[1] The PDR is one of the few personal defense weapons designed to use a standard caliber to simplify the logistics.

The method of operation is a short stroke gas piston.

The PDR-C (Compact) features an FN P90-style pistol grip and ergonomics offering a more compact weapon, while the PDR-D (Direct) uses a more conventional pistol grip with vertical grip (similar to a Steyr TMP) and safety nub to keep users from injuring themselves.