The "Gun Slinger" is a pump-down tool that is used to convey wireline perforating guns in to horizontal or highly deviated wells. As pump pressure is applied from surface, wellbore fluid acts against the pump-down element pushing the BHA. Small ports behind the pump-down element allow fluid to bypass through the bottom of the gunslinger jetting/washing any debris that lay in the path of the BHA. The small ports also act as a fluid bypass when the BHA is correlated in to position or back to surface in the event of a misfire. Once the BHA is correlated in to position, the perforating guns are detonated. Percussion plus gun gas pressure force the inner mandrel downward, exposing additional larger ports, which allows the BHA to be pulled out of the well at a rapid speed.