School me on 9mm ARs.
With the introduction of USPSA PCC, I'm in the market to build a 9mm AR.
Do they use regular 5.56 AR free float rails?
I see there's a 9mm buffer, I'd it necessary over a carbine or H1?
Which is better, Colt SMG or Glock lowers? As far as reliability in feeding goes.
Can I use a standard stripped upper I have laying around?
I must study politics and war, that our sons may have liberty to study mathematics and philosophy. - John Adams
The AK guys are all about the reach around. - Garand Thumb.
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