Ok, I gots questions. I've always been a bolt-action fan so, I don't know very much about the AR-style weapons. From what I understand, the lower is the only part of the gun that is legally considered a firearm and as such, you can order all kinds of variations for the rest of the gun. So, is a stripped lower functional or does it require modification to work? By that I mean, if you add the upper assembly, barrel, etc. will it function?
Also, you mentioned B/O. What is that? What is an SBR? I've always been into guns and the like but, I'm seeing new terms or at least I'm not connecting the abbreviations to the meanings. Thanks!
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