The original M models were produced from 1999 to 2004 and are considered "first generation" designs. These models have a relatively smooth frame with the Steyr Arms logo imprinted on both sides of the grip, no thumb rests, no accessory rail and a rounded trigger guard. The first generation guns only are available in the M size, in 9mm, .40 S&W and .357 SIG. The first generation guns were only produced in the M (Medium) and S (Sub-Compact/Small) sizes.
