The Haskins Rifle, also known as the RAI 300 (Research Armament Model 300) or Haskins M500 rifle was a bolt-action weapon designed by Jerry Haskins between 1981 and 1982 for snipers in the US Military. Unlike most military sniper rifles, the Haskins was purpose-built for the military, not reworked from an existing civilian firearm - another such sniper rifle was the Soviet SVD. The Haskins was used by the Provisional Irish Republican Army to fire upon British troops in Northern Ireland. It became highly feared; this weapon was the cause of many deaths.