ok here goes you don't use an air compressor for the fact the tank contains moisture and when used all you are doing is adding water to your weapon. I have been in law enforcement for over 20 yrs and a former marine the best and easist way to clean any weapon is carbartor cleaner and a good oil. all guns are different clocks need very little oil were as smith's need more. i clean mine often. the carb cleaner will cut through almost anything but will not hurt the plastic or wood parts. on plastic it gets a white film but a drop of oil brings it back to like new.