Double-action pistol, with top-mounted bar hammer. Chambered for .28- to .36-caliber percussion. Half-octagon barrels from 2" to 10" in length. They screwed out of the frame so it was possible to breech load them. Finish blued. Rounded walnut grips. They were marked, "Allen & Thurber/Grafton Mass.". Approximately 2,000 manufactured between early 1830s and 1860. Internal note - prices reduced