Also known as: Model 107 chambered for .357 Magnum; Model 108 chambered for .38 Special; Model 109 chambered for 9mm. Barrel 2.75", or 4". A few 6" barrel Service-Sixes also produced and these are worth a premium. Has fixed sights and square butt, with checkered walnut grips. Finish blued. 9mm discontinued in 1984; other two calibers in 1988. Note: Add 60% for 9mm.