100% certain it is a dummy gun (a "prop" gun can be a real gun) made as a decorator. Such guns are often seen in "Old West" themed restaurants, and other locations. They were never made to fire and cannot be altered or changed to firing condition.
FWIW, in the old days, guns used in movies and TV were usually real guns, firing blanks. As a result of tragedies with blank cartridges, insurance companies (and sometimes local laws) require that guns on a set must be either dummies or totally deactivated. The flash and noise of "firing" is added to the digital master by the "back room boys".
(Ever see an actor sweeping the scene with a machinegun and notice that the muzzle flash is not tracking the muzzle?)
Last edited by James K; April 4, 2013 at 07:13 PM.