Funny, I was over at GlockTalk and checked in their GATE forums (Go Ask The Expert) which is an interesting forum where the only replies allowed are from industry experts. While no doubt we could argue whether their experts truly are experts I thought I'd pass along this question from a newbie and the answer from Rainier Arms, a vendor I've dealt with and trust: newb question (buying first AR) would i be better off a) buying a used 6920 b) attempting to build my own? c) buying off the shelf. (new.) also, the more i read about piston systems, the better they seem to be. am i just falling for the "ooh, ahh"? if so, is there a conversion kit to go to piston? i'm going to be working with rather limited funds (about a thousand) and would like to get as far as possible. i've been told the most popular lower priced are "questionable" as far as quality. i figure i'd rather ask a newb question of an expert, than flush a grand down the toilet.