This Volcanic lever action carbine with a 16 1/2-inch barrel was manufactured by the New Haven Arms Company. This carbine has the rarely encountered plain receiver. The barrel has an integral 20-shot magazine, Type II partial rib, crowned muzzle, rounded T-bar magazine catch, German silver front sight blade and small brass clam shell-shaped follower. The top barrel flat is roll-stamped: "NEWHAVEN CONN. PATENT FEB. 14.1854" in one line. The distinctive brass receiver has shallow circular cut-outs on either end of the ejection port and a dove-tail mounted, spring steel, rear sight with round-head elevation screw. The hammer has hand cut knurling on the spur. The straight grain walnut stock has a crescent brass buttplate. The serial number is stamped on the left side of the lower receiver tang beneath the stock, on the stock comb beneath the buttplate, inside of the buttplate heel and on the shanks of the hand-fitted buttplate and tang screws. All of the visible serial numbers match. The barrel/magazine, bolt, rear sight, lever, tang and buttplate screws have a high polish blue finish. The receiver and buttplate are natural brass. The cartridge elevator, trigger and hammer are bright. The walnut stock has a high polish piano finish. The New Haven Arms Company manufactured an estimated 1000 lever action carbines with 16, 21 and 25 inch barrels.