Only 1,500 of these Joslyn "Monkey Tail" carbines are estimated to have been manufactured by A. H. Waters of Millbury, Massachusetts in 1855 and 1856, and were the last firearms manufactured by Asa H. Waters. The Waters family had been involved in U.S. martial arms contracts since at least the 1808 contract muskets. These Joslyn carbines are known to have been issued to the 2nd, 3rd, 4th, and 6th Ohio Cavalry regiments in limited numbers. Features a large pinched blade front sight, ladder rear sight and a left mounted saddle bar and ring. There are no visible ordnance proof or inspection marks. "A.H. WATERS & Co/MILBURY MASS" marked on the lock, "PATd BY/B.F.JOSLYN./AUG.23.1855" marked on top of the breech block in reference to inventor Benjamin F. Joslyn, "5E" marked on the left of the breech block and "T4" on the right of the brass barrel band.