The P229 SAO in 9mm brings single-action-only operation to the compact P229, with an ambidextrous thumb safety for 1911-style carry. The shorter P229 grip and 3.9-inch barrel in SAO configuration offer a carry-optimized single-action pistol from the SIG lineup. Less common than the DA/SA variants but valued by shooters who prefer consistent trigger pull in a compact platform. Type: Pistol Action: SA Only Caliber: 9mm Capacity: 15 Year introduced: 2011, USA Weight: 32.4 oz Overall length: 7.4" Status: Active Intended use: carry