Patent ID: 8449346

Claim:
A toy gun comprising: a housing; a bullet loading unit in a forward end of the housing; a piston in a fixed cylinder of the housing; a gunstock coupled to the housing; and a backward momentum transferring mechanism partially disposed in the gunstock and including an intermediate weight, a sliding rod disposed rearward of the piston, and a rear recoil spring having a front end urging against a rear end of the intermediate weight and a rear end urging against a stop wall formed in the gunstock; wherein the sliding rod is disposed in an initial position prior to operation of a trigger of the toy gun, the first position being between the piston and the intermediate weight and spaced apart from the intermediate weight, the space between the sliding rod and the intermediate weight being devoid of other elements, a front end of the sliding rod engages with the piston, and a rear end of the sliding rod extends into the gunstock; wherein the sliding rod is driven with the piston from the initial position into contact with the intermediate weight to generate an audible metallic sound, and displaces the intermediate weight against a bias force of the rear recoil spring responsive to operation of the trigger of the toy gun to compress the rear recoil spring and thereafter transfer a backward momentum to the gunstock.