CORROSIONX FOR GUNS COMES IN A 4-OZ APPLICATOR-TIP BOTTLE THAT ALLOWS PINPOINT TREATMENT OF SPECIFIC LUBRICATION POINTS. CORROSIONx CUTS THROUGH STUBBORN BORE DEPOSITS FOR EASIER, MORE THOROUGH CLEANING AND IT DECREASES FOULING, EVEN AFTER HUNDREDS OF ROUNDS (AS REPORTEDIN SEVERAL GUN MAGAZINES). It lubricates mechanisms and is ideal for semiautomatics and automatics. CorrosionX for Guns prevents rust...even in wet weather.