This replica is full metal and wood and features moving parts.
 
A coach gun is a modern term, coined by gun collectors, for a double-barreled shotgun, generally with barrels from 18" to 24" in length placed side-by-side. The terms "cut-down shotgun" or "messenger's gun" were coined in the 1860s when Wells Fargo & Co. assigned shotgun messengers to guard its shipments on stagecoaches in California. It is because of this gun and its usage that the term "Riding shotgun" came to be.