Manufactured from 1879 to 1887, the Model 320 revolving rifle is one of the rarest Smith & Wesson firearms manufactured with a total production of 977. These firearms were serialized from 1 to 977. The Model 320 was manufactured in three barrel lengths of 16, 18, and 20 inches with twenty being the rarest length; only 224 were manufactured by Smith & Wesson. The 20 inch barrel has a combination folding globe front sight and adjustable rear sight. The top of the barrel rib is marked with the two line address/patent dates. The matching serial number appears on the butt, cylinder, barrel and barrel latch. The cylinder chambers are numbered 1-6. Blue finish with casehardened trigger guard and hammer. The barrel is fitted with a checkered hard rubber red mottled forearm with the Smith & Wesson monogram on the underside. The grips are matching with Smith & Wesson monograms in a circle at the tops. The stock is smooth walnut with blue finished attaching iron and a checkered hard rubber buttplate with Smith & Wesson monogram. The stock has a tang peep sight.

Very fine overall. The revolving rifle retains 85% plus original bright blue finish with some thinning to a brown and showing a few isolated patches of heavier scratches particularly on the top of the rib between the barrel latch and rear sight. Some light spotting is present on the cylinder. The hammer and trigger guard retain 80% original case colors. The forearm and grips are also excellent with overall crisp checkering. Mechanically excellent. The stock is also very fine with the attaching iron retaining 60% original blue finish and some minor pressure dents and scratches on the wood. Mechanically fine. Overall a unique example of a highly desirable and scarce Smith & Wesson 320 revolving rifle.