.69 caliber. 42" rifled barrel secured by three flat, spring retained bands. NSN. Bright finish, iron furniture, walnut stock. Lock marked  REMINGTON'S/ILION, NY/1857/U.S. in four vertical lines at tail. Tang of patent breech dated 1856, and with the partially legible bayonet mating code T/25. Counterpane with weak, illegible script cartouches. Rifled bore and upgraded with a US 1855 pattern long range rear sight and a steel blade front sight. Maynard priming system remain compete and intact. Retains both sling swivels and the button head ramrod that is correctly dished for use with elongated ball ammunition that is about 1" short of full-length. The initials FO are carved in the reverse butt. The musket is one of the US 1816 pattern muskets altered to the Maynard automated priming system at Frankford Arsenal circa 1856-1858, with 20,000 altered for the US government and 2,000 for the State of New Jersey. The guns were also rifled during the conversion process, with the US guns fitted with long range rear sights as this one is and most of the NJ guns not so equipped.