Action: Semi-Auto - Caliber: .22 LR - Capacity: 28rd - Barrel: 16 (1:16) with Muzzle Brake - Sights: Adjustable Rear Sight Post Front Sight - Upper Receiver: Polymer Black - Lower Receiver: Polymer Black - Stock: Polymer Black - Grip: Polymer Black - Handguard: Polymer Black - Length: 34.25 - Weight: 5.51 lbs. - The Chiappa Firearms m four-22 Carbine is a rimfire replica of the versatile weapon system with proven combat utility and performance providing the operator with the confidence required to accomplish any mission. Featuring a 16 in. barrel it is designed for use wherever lightness speed of action mobility and affordable plinking are required. It can be comfortably carried yet be instantly available to provide affordable accuracy hours of fun on the range. Just as the original M4 is proven in military operations the Chiappa Firearms m four-22 Carbine will soon set the standard in sub caliber tactical fun. For extensive information about materials and characteristics of all components please download the file Mfour-Chart of components.pdf under the Manuals section in this page. GEN II: The second generation of model Mfour-22 features a reinforced polymer with mechanical characteristics very similar to aluminum.