What is the Ray gun glitch on Cod 5

this works on any level but you have to be quick. you open the help door and go to the random box. there is a triangle starting at the bottom of the lid. if you shoot the lid and then the there should be another triangle thing shoot the tip of that one and when the weapons stop there should be a browning, fg42 or ray gun.

add me on ps3 my name is andy_190