The factory letter lists this rifle in .40-60 with a 28 inch barrel, set trigger, and pistol grip stock and as shipped on August 25, 1887. The rifle has a brass "Rocky Mountain" blade front sight, adjustable sporting rear sight, the two-line address and patent marking ending in 1880, "40 CAL." on top at the breech, double set triggers, a checkered pistol grip stock and forearm, and lightly curved steel buttplate. There is an empty tap on the upper tang for mounting a peep sight.