The original flintlock model had a 32.5-inch barrel rifled with 16 "clockwise" (right-hand) grooves making a turn in 96 inches. The muzzle was reamed to a depth of 1.5 inches, creating the illusion of a smoothbore when the user looked down the muzzle of the firearm. Overall length was 52.5 inches, and weight without bayonet was 10.25 pounds. The rifle fired a .525" ball weighing 220 grains (one-half ounce), using a 100-grain black powder charge and 10 grains of fine powder primer (flintlock versions only).