the present invention is revolver louver which redirects the hot propellant gases which leak from the barrel - cylinder gap away from the user . the louver provides at least one directional passages which control the flow of propulsion gases after firing the revolver . numerous embodiments are disclosed including some having an expansion capability to further block gas passage and one embodiment which is an extension of the revolver frame itself . one embodiment further comprises an expansion groove to further block the passage of propulsion gases . as such , the present invention &# 39 ; s general purpose is to provide a new and improved revolver that is more compact and safer for the user than a conventional revolver .