Overall length 45.25"; barrel (bore) length 30"; caliber .46 rimfire. Marked on frame with standard Ball & Williams manufacturer (left), agent (left) and patent (right) markings. Rifles are additionally distinguished by state ownership mark "KENTUCKY" stamped into top of frame near breech. Kentucky contracted for 3,000 of these arms in November 1863, initially in .56-caliber. However, by mutual consent of state and contractors, in February 1864 caliber of arms was changed to .46. All deliveries were made in this caliber, beginning in July 1864 and continuing until March 1865 (serial numbers 10,400 to 14,500).