The HK SL8-1 is the US civilian import version of the G36 assault rifle, featuring a thumbhole stock and 10-round magazine to comply with AWB regulations. Known as the most different-looking G36 variant. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm Capacity: 5 Year introduced: 2000, Germany Weight: 8.6 oz Overall length: 39.3" Status: Discontinued Military use: Yes Intended use: Collector