Revolver. The stock consists of a chequered walnut grip with steel butt plate, solid steel frame and steel trigger guard. A Kerr rammer is fitted to the left side of the front of the frame and barrel. A safety catch is fitted to the rear of the cylinder on the right side of the frame. The revolver has a double action lock and is also able to be thumb cocked. The cylinder has five chambers. The barrel is of octagonal section, rifled with three grooves and cast in one with the frame. A triangular blade foresight is mounted on a horizontal bar. The calibre is 0.45in. The stock is inscribed 'LONDON ARMOURY' at the top of the frame and the right side is marked with a broad arrow over 'WD, B.11.344' and 'ADAMS PATENT No27007'. Each chamber bears the proofmark of the London Gunmakers Company. '1006' is stamped on the inside face of the rammer lever. Designed by Samuel Colt's principal rival Robert Adams, a London gunsmith, this revolver was adopted for service issue from 1855. Frederick Beaumont, a lieutenant in the Royal Engineers, patented the double action lock. The cylinder held five rounds and the revolver was loaded with paper or skin cartridges. Manufactured by the London Armoury Company, those issued for military and naval use were stamped WD (War Department).