The P229 in .40 S&W replaced the P228 M11 as the US Secret Service standard sidearm. The stainless slide on aluminum frame construction was chosen for its durability under heavy use. USSS agents carry the P229 in a concealment holster. Type: Semi-Auto Pistol Action: Double/Single-Action Caliber: 40 S&W Capacity: 12 Year introduced: 1999, USA/Germany Weight: 32.4 oz Overall length: 7.1" Status: Active Intended use: Law Enforcement, Duty