I just traded a bolt rifle for an AR (Timberwolf Tactical Solutions built, 1:7, 16", 4140 chromolly barrel). The guy from whom I received it added some nice features, light, scope, etc., so I am not sure I want to add or need to add. I got it for range use/targets, maybe HD, maybe some 3-gun matches. My question is...is there anything else I need to do to it? I don't even know what I don't know. What are some good sources for disassemby and cleaning? Knowing it is not a chrome-lined barrel, how often should I clean? Thanks for tackling some esoteric and nebulous questions!