CLEANING AND LUBRICATING YOUR FIREARM JUST GOT A WHOLE LOT EASIER THANKS TO BIRCHWOOD CASEY'S GUN SCRUBBER? AND SYNTHETIC GUN OIL 2-PACK. GUN SCRUBBER? FIREARM CLEANER CLEANS DEEP AND EVAPORATES FAST. SYNTHETIC GUN OIL FOR ALL CLIMATES REDUCES FRICTION BETWEEN MATING SURFACES AND WILL NOT GUM UP OR LOSE ITS VISCOSITY UNDER EXTREME TEMPERATURES.