I finally did it! I bought myself an AR15. The only thing is...I sold a Glock to do it. I used the proceeds from the sale of my problematic Glock 21 SF. It was an ambidextrous model and would not eject a fully loaded magazine without me using 2 thumbs and then the mag release would not return to the center. Anyway, back to the rifle! Its a Bushmaster SuperLight Carbine. $825 OTD. Included two 20 round magazines and a carrying case. I also purchased one MagPul PMAG and a polymer magazine from a company called CAA. Both fit snug and drop free when ejected. I am looking into some quad rail hand gaurds. Any suggestions?