The MP5 submachine gun is easily the most famous of all HK gun designs. In fact the sleek lines of the MP5 may be the most recognizable gun silhouette of all regardless of manufacturer. - Now you can get the authentic look feel and features of the legendary HK MP5 in a semi-automatic .22 LR rifle. HK has partnered with Umarex of Germany to bring you the only HK-authorized rimfire versions of the legendary MP5. So whether you're looking for an economic but serious sub-caliber trainer a suppressor host or just want the coolest .22 LR fun gun on the range look no further. - Caliber: .22 L.R. HV - Action type: Blowback - Trigger: Single stage trigger - Magazine capacity: 10 / 25 round - Length (overall): 18.2 in / 463 mm - Barrel length: 8.5 in / 217 mm - Width: 2.3 in / 60 mm - Height: 11 in / 280 mm - Weight (empty magazine): 5.9 pounds / 2670 grams