The present invention is a toy cap gun, which includes a gun housing having a forward end and a rearward end, a chamber, a barrel, a cap anvil, a hammer and a trigger. The chamber is formed of material which permits light from a cap firing flash to be visible therethrough, and the chamber further contains an effective amount of a glow in the dark material. Further, the chamber is movably located within the housing and the chamber and housing together are adapted to load and unload caps. The barrel is located at a forward end of the housing and the chamber. There is a rotatable cap anvil which is located on a rearward end of the chamber, extending into the chamber and adapted to hold caps. The hammer is located on the housing, is connected to a trigger mechanism and is located adjacent to the cap anvil for intermittently striking and detonating caps. There is a trigger mechanism extending from the housing and functionally connected to the hammer for intermittently impacting the hammer to detonate caps.