The NAA Guardian is a double-action-only semi-automatic designed by John Detonics Sardius team members. All stainless steel construction with a 6+1 capacity in .32 ACP. Type: Pistol Action: Semi-Automatic Caliber: .32 ACP Capacity: 6 Year introduced: 1997, USA Weight: 13.5 oz Overall length: 4.75" Status: Active Intended use: Backup Gun, Concealed Carry, Personal Defense