The Umarex Colt M4 .22 LR is a germany-made semi-automatic rifle chambered in .22 LR, introduced in 2009. Primary use: self_defense, sport. Type: Rifle Action: Semi-Automatic Caliber: .22 LR Capacity: 10 Year introduced: 2009, Germany Weight: 104 oz Overall length: 43.5" Status: Active Intended use: self_defense, sport