 The largest sizes would be carried in holsters across a horse's back just ahead of the saddle.In-between sizes included the coat pocket pistol, or coat pistol, which would fit into a large pocket, the coach pistol, meant to be carried on or under the seat of a coach in a bag or box, and belt pistols, sometimes equipped with a hook designed to slip over a belt or waistband.Larger pistols were called horse pistols.