The NAA Companion is a percussion cap-and-ball mini revolver styled after Civil War-era pocket revolvers. Shoots 22-caliber lead balls with percussion caps — not a cartridge firearm but treated as a muzzleloader legally in many states. Type: Revolver Action: Single-Action Caliber: 22 LR Capacity: 5 Year introduced: 1996, USA Weight: 4.5 oz Overall length: 3.5" Status: Active Intended use: collecting, plinking