Talking about pistol grips, here is a tool you where can understand how it got the name. Pistol grip pliers like the kind Neiko and other brands offer allow you to sneak the jaws into places where you might have trouble operating straight-handled pliers. The force you apply by squeezing the handles is transferred almost 90º to close the spring-loaded jaws.
These particular pliers are long-nose, but pistol grip pliers also come with bent, or hose and cable jaws. Pricing starts around $5 before shipping.