The Model 325 Night Guard is an N-frame .45 ACP revolver with an extra-short 2.75-inch barrel, a scandium alloy frame, AirLite titanium cylinder, and an XS Tritium Big Dot front sight optimized for low-light use. Designed as a home defense and nightstand revolver using moon clips for the .45 ACP cartridge. The light alloy construction keeps weight below 30 ounces despite the large N-frame. Type: Revolver Action: Double-Action Caliber: .45 ACP Capacity: 6 Year introduced: 2009, USA Weight: 28.9 oz Overall length: 7.75" Status: Discontinued Intended use: Home Defense, Service