New to Glocks and this forum. I have had my G17 Gen 3 for a few months. When I bought it from the store, the owner told me that is his 30 years experience that you really did not need to clean the gun the often, mabey every 300 to 400 rounds. He said too much cleaning cans cause problems and the gunsmiths have said they agree. But the Glock manual says to clean the gun after every use. Being a clean freak I do. I suspect problems are caused when people over use oil and grease. It seems beaking down the gun cannot cause wear. I use very little oil. Who is right and any high milage glocks out there that have been cleaned every use. Thanks.