The Parker Hale PDW (Personal Defense Weapon) was an experimental self-defense weapon designed for vehicle crews. It was not selected by the British Army because the Enfield SA80 was supposed to replace the submachine gun and battle rifle in service.
It was made entirely out of an experimental polymer, making it very light. It used Ealovega's patented rate regulator, which used a electrically-powered hydraulic system governed by a computer chip (with the battery pack stored in the pistol grip). This controlled the rate of fire, taming the recoil of the weapon to fit the size and strength of the user. It had a Picatinny rail across the top for mounting NATO-standard sights and a flat two-strut folding retractable stock that folded sideways over the magazine well.
The original model was the Bushman IDW (Individual Defence Weapon). It was designed by George D. Ealovega, who marketed it through the firm of Bushman Ltd.
Ealovega had the prototypes manufactured by the Rheinlander Instruments Corporation, who machined them entirely out of a heavy steel stock. It had iron sights and didn't have a bracket for optical sights. It also lacked a folding stock, as the weapon was supposed to be fired without it.
Ealovega's first sample gun was run for 22,000 rounds before being retired.