Mauser M20 Features The Mauser M20 machined aluminum slide allows for use of both standard and HV ammunition. The M20 Mauser features ergonomic grips; double/single-action; machined aluminum slide; slide serrations front and rear; threaded barrel for the attachment of muzzle devices; hammer de-cocker and slide-mounted safety. Mauser M20 Specifications Brand: Mauser Rimfire Model: M20 Category: Rimfire Pistols Caliber: 22 LR Capacity: 10+1 Action: DA / SA Frame Finish: Black OAL: 7.10 Frame Material: Aluminum Sight Style: Adjustable Slide Finish: Black Slide Material: Aluminum Slide Description: Serrated Safety: Ambidextrous Thumb Barrel Description: Steel Threaded Barrel Length: 4 Weight: 1.40 lbs Frame Description: Aluminum Frame w / Picatinny Rail