COLT SMG UPPER - AN OVERVIEW

So, in case you’re not too bothered about wanting a significant tactical weapon with a powerful caliber but wish to rejoice with a similar type of weapon – a 9mm AR-15 upper might be how ahead. I haven't selected a flat major or A1 (devoid of FA and deflector).  I am pondering a sixteen" flattop, along with a 10.five" with carry cope with lik