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. The system consists of a gas-operated bullpup carbine intended to replace some submachine guns, M9 pistols and M4 carbines while still offering the rapid fire and range of an M4 carbine in an ultra compact firearm.^[1]

Personal Defense Rifle
Type	Bullpup personal defense weapon Assault Rifle Carbine
Place of origin	United States
Production history
Designer	Magpul Industries
Designed	2006–2011
Produced	Never went into production
Variants	PDR-D
Specifications
Length	PDR-D: 19 in (480 mm)
Barrel length	10.5 to 12.5 inches
Cartridge	5.56×45mm NATO
Caliber	5.56mm
Action	Gas-operated, rotating bolt
Feed system	Various STANAG magazines
Sights	Iron sights, MIL-STD-1913 rail provided for optics

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. It is striker-fired, features an ambidextrous ejection system, and ambidextrous controls.

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.