Letter Re: .300 AAC Blackout Uppers for AR-15s
Hi James, I read your excellent forum every day, before I read the local paper. In case you haven’t looked at the new .300 AAC Blackout, you might want to take a hard look at it. The PDF of a presentation by an AAI executive describes it quite well. With just an upper receiver swap out, you can have an AR-15 that will shoot through a pretty hefty tree, vehicle panel or door. I load my own and convert old 5.56 brass into Blackout brass with a single stroke of the press handle. A Dillon electric case trimmer whacks …