PISTOL: RUGER MODEL KP-90, SERIAL NUMBER 66357518, SEMI - AUTOMATIC, 45 ACP (45 AUTO), BLACK (MATTE), YES - INCLUDES ORIGINAL BOX AND PAPERS, 4.5" BARREL, USED BUT IN GREAT CONDITION. Notes: RUGER KP-90 45 ACP INCLUDES THREE 8 ROUND MAGS PISTOL: RUGER MODEL KP-90, SERIAL NUMBER 66357518, SEMI - AUTOMATIC, 45 ACP (45 AUTO), BLACK (MATTE), YES - INCLUDES ORIGINAL BOX AND PAPERS, 4.5" BARREL, USED BUT IN GREAT CONDITION. Key Specifications Caliber: .45 ACPCapacity: 8+1 roundsBarrel Length: 4.5 inchesAction: Double-Action/Single-Action (DA/SA) with a frame-mounted slide decocker/safetyConstruction: Aircraft-quality aluminum alloy frame paired with a durable stainless steel slide.