In his continued efforts to dispose of surplus and rejected parts from his Connecticut and federal contracts, Whitney devised in 1863 a rifle-musket generally conforming to M1861 rifle-musket except in two notable features. The bolster, instead of projecting considerably away from the barrel and having a clean-out screw was relatively short and flat faced. Process of making this bolster eliminated one production sequence, since it was not possible to drill the hole for the cone directly to the barrel. To accommodate the new cone position, lockplates were made flat without the bevel and in-letted flush with the stock. Lockplates bear eagle surmounting the panoply of flags and trophies over WHITNEYVILLE" stamp forward of hammer and are known with "1863" on the tail or without any date. Rear sight same as used on "Manton" rifle-musket derivative. Arms with barrels than 40", 39" and 30" exist, all in .58-caliber with 3-groove rifling; however, shortest of these may be post-war modifications for cadet use. Quantities made are not known, but surviving examples suggest limited production, probably to use faulty parts from 1863 federal contract.