| Steyr M | |
|---|---|
 'Third generation' Steyr M9-A1 with 15-round +2 baseplate magazine | |
| Type | Semi-automatic pistol |
| Place of origin |  Austria |
| Production history | |
| Designer | Friedrich Aigner, Wilhelm Bubits |
| Designed | 1999 |
| Manufacturer | Steyr Mannlicher |
| Produced | 1999–present (.357 SIG production ended 2014) |
| Variants | See Variants |
| Specifications | |
| Cartridge | 9×19mm Parabellum (L9-A1, M9, S9, M9-A1, L9-A2, M9-A2 S9-A1) 9×21mm (M9, S9, S9-A1—Italian market only) .40 S&W (L40-A1, M40, S40, M40-A1, S40-A1) .357 SIG (M357, M357-A1) |
| Action | Short recoil, locked breech |
| Feed system | 17 or 15-round box magazine available (M9-A1) 12-round box magazine (M40, M357) 10-round box magazine (S9, S40) |
| Sights | Fixed iron sights, trapezoid notch and triangular front blade |
The Steyr M is a series of semi-automatic pistols developed by Steyr Mannlicher GmbH & Co KG of Austria for police services and the civilian shooting market. Design work on the new pistol began in the early 1990s and the final product known as the M9 (adapted to fire the 9×19mm Parabellum cartridge) was officially unveiled in the spring of 1999.[1] The M40 version chambered in .40 S&W was developed before the M9, followed later by the M357 (chambered in .357 SIG) and two smaller variants of the M9 and M40 designated the S9 and S40 respectively. These pistols were developed primarily for concealed carry and have a shortened barrel, slide, smaller frame and a reduced magazine capacity.[1] In 2013, the Steyr M (Medium) and S (Small) form factors were complemented by the L (Large) sized series and the C (Compact) sized series both available in 9×19mm Parabellum and .40 S&W chamberings as the L9-A1, L40-A1, C9-A1 and C40-A1.