Pedersoli's Harpers Ferry 1805 flintlock pistol — the first officially adopted U.S. military sidearm, a .54 caliber smoothbore flintlock. The standard side arm of the Lewis & Clark Expedition. Meticulous reproduction of the first American national armory pistol. Type: Pistol Action: Single-Shot Caliber: 54 Caliber Ball Capacity: 1 Year introduced: 1988, Italy Weight: 46 oz Overall length: 16" Status: Active Military use: Yes Intended use: Collector, Reenactment, Historical