This is an extremely rare example of an early breech loading percussion rifle invented by William Mont Storm of New York. Reference U.S. Patent number 15,307 dated July 8th, 1856, and British Patent no. 2933 of 29 November, 1860. It uses a hinged trap door breech block system for loading with powder and ball, with a locking block actuated by the fall of the hammer. This design was used in British Army trials in the search for a system to convert leftover stocks of muzzle loading Enfield percussion rifles and carbines to breech loaders, of which Snider’s Patent was eventually chosen. Features a fixed blade front sight, 1,000 yard folding ladder rear sight, shallow five-groove rifling, filled in section where a bayonet lug used to be on the right side towards the muzzle, and two iron barrel bands. “Wm MONT STORM’S/PATENT” marked on top of the breech block. "MOORE & HARRIS/1863" marked on the lock. Serial number "241" is marked on the upper rear of the receiver, inside of the lock, rear of the lower tang, and on the underside of the breech block, barrel and receiver. Birmingham proof marks are on the underside of the barrel, receiver and breech block. Casehardened receiver, breech block and lock with a blued barrel (traces visible underneath). "GDM" (George D. Moller) collection initials marked at the toe of the stock. Includes leather sling and brass tipped wood tampion. Provenance: The George Moller Collection