The P239 in .357 SIG — identical magazine and barrel-swap relationship with .40 S&W as the larger P226 and P229 variants. The most powerful single-stack compact SIG ever made in the slim P239 format. Type: Pistol Action: DA/SA Caliber: .357 SIG Capacity: 7 Year introduced: 1996, USA Weight: 29.5 oz Overall length: 6.6" Status: Discontinued Intended use: carry, concealed_carry