When I was a Glock nube, I used to clean the thing inside and out and oil the heck out of it. Then after edjamakatin' myself with a few Youtube videos and getting a feel for what veteran shooters do, I have modified my cleaning technique. I have to give credit to Hickock45 of Youtube, who does a lot of gun reviews, but prefers Glock. http://www.youtube.com/user/hickok45 So now I just field strip my Glocks (I have a 22 gen 3 and a 19 gen 4), brush the barrel with a standard brass bore brush, and then run patches through with a light coating of oil on them until they come out clean. I then remove as much residue as possible from the slide, using q-tips to get into the hard to reach places. For the receiver, I do not use any cleaner. I simply use a stiff toothbrush to get out any grit or debris. If there is a lot of residue, I hit it with a dry rag. Then put a light amount of oil on the steel tabs that contact the top slide. Finally, I reassemble, test the action, and wipe down the outside with a very small amount of oil to make it pretty. Any suggestions, comments, concerns?