This month, Racer has been looking at this fuel gun from GS. Athough the GS fuel gun is one of the cheaper units on the market, it is one of the easiest to use and most popular. The benefits of a fuel gun are less time in the pits and therefore a faster turnaround. We are just one of many who use a gun during finals to save time which is an obvious advantage, if you are relying on just one person to assist you in the pits.