Manufactured 1879 to 1887 with a total production of only 977, this is one of the rarest Smith & Wesson firearms produced. Of the 977 manufactured, 840 remained in the U.S., 137 were exported and only 239 were made with the 16 inch barrel. Serial numbered from 1 to 977. This scarce and unusual revolving rifle was sometimes referred to as the Smith & Wesson "Buntline Special" in the combination of a long barreled revolver with attaching shoulder stock. This Model 320 was manufactured using the frame, cylinder and basic action of the New Model No. 3 revolver with some minor differences in the hammer and trigger, with the barrel composed of two pieces. A slot is cut into the butt and a hole drilled in the back strap to accommodate the shoulder stock. The rifle features a 16 inch barrel with two leaf folding rear sight on a solid rib marked with the two line address/patent date marking. The serial number is found on the butt, cylinder, barrel and barrel latch. Blue finish with casehardened hammer and trigger guard. The barrel is fitted with a checkered red mottled hard rubber forearm with the S&W monogram. The grips are matching with S&W monograms in a circle at the top. The stock is smooth walnut with blue finished attaching iron and a checkered hard rubber buttplate with S&W monogram. With the gun are the following: 2 front sights, a stock peep sight, cleaning rod with attachments, a bullet seater and a contemporary partitioned case.

Fine. The rifle retains 80% original blue finish with the balance a smooth brown patina. The cylinder retains traces of blue with the balance a cleaned smooth gray patina. Some mild pitting is present. Traces of original case colors are retained on the hammer and trigger guard. The forearm and grips are excellent with a few minor handling marks and overall crisp checkering. Mechanically fine. The stock is very fine with a few minor pressure dents and some minor scratches. The attaching iron retains 80% original blue finish thinning to a brown.