Hi all, I saved my nickels and dimes and right about the time the ar became the most hated scary gun the anti gunners ever seen I had just enough to buy one. Well a month later I acquired (at a fair price $1000?) (will acquire arrives next week) a CMMG 16in Flat top. I have to admit I know very little regarding Ar 15's in general. Naturally I want to turn it into my adult Lego set I just need to be pointed in the right direction any suggestions, any resources would be great. It's a 16in chrome lined flat top with free floating tube. I don't even know what free floating tube means. Either way coming out of the box it's kinda plain Jane and I want to make it ooh and ahh worthy while practical to use and as scary lookin as Fienstien . Thanks all and please with the help small words I am very new to this forum and the Ar platform.