.36 caliber (100 bore) smooth bore screw off twist steel barrels measuring 1 1/2″ . Center hammer boxlock actions folding triggers that are activated when cocked. Checkered bag grips. In superb original condition with the barrels and hammers retaining nearly all of the blue, the engraved frames remain excellent. In their green baize lined box complete with accessories that include a small size Sykes flask, combination nipple and barrel wrench, cleaning rod, cap tin, and mold marked 100. All in excellent condition.