This is one of only 1,001 Model 1880 experimental rifles manufactured approximately April-June of 1881, with far less surviving examples encountered today. This rifle was the first serious attempt at adopting the ramrod bayonet by the U.S. military, which was received negatively, as were almost all attempts that followed all the way up to the early Model 1903s. The main difference between this model and the standard Model 1879 rifles is the inclusion of a sliding "rod bayonet" with a triangular blade, the associated locking mechanism fitted below the barrel, compartment in the butt, with otherwise standard features. Two circled script "P" firing proofs stamped behind the lower tang, and Samuel W. Porter's boxed script "SWP/1881" inspection cartouche stamped on the left stock flat. Includes a shell extractor tool inside the butt compartment.

Very good, retains 40% original blue finish and case colors strongest in protected areas, with scattered mild freckling and smooth brown patina on the balance. Stock is also very good, with a small chipped section on the left tip of the forend, chips on either side of the barrel tang, some dents and scratches, and a defined cartouche. Mechanically excellent.