The Heckler & Koch MP5 is one of the most iconic firearms in history, adopted by police and special operations forces in over 40 countries. The semi-automatic civilian versions — produced by HK USA and various licensed clones — use the same roller-delayed blowback action as the submachine gun original but fire only semi-automatically. The SP5 is the current US civilian version. Type: Rifle Action: Semi-Automatic Caliber: 9mm Capacity: 30 Year introduced: 1966, Germany Weight: 88 oz Overall length: 26.8" Status: Active Intended use: law_enforcement, sporting, collector