AR Calibers - AAC 300 Blackout
Also known as the 300 Whisper. I wanted an AR 15, but I also wanted a 30 cal.
Not having any idea what I was doing, I bought an AR lower. It just happened to be made by AAC . I started doing some research and found the AAC lower could accommodate 223/5.56 and also a 30 cal called the 300 Blackout. The same lower, the same magazines, same bolt, just change the uppers. I now have two uppers for my lower and love the idea. The 300 BO has very little recoil and lower noise level than the 223. It's illegal to big game hunt with a 223 in WA so I'll hang my 300 BO on the lower and use it. I only have one set of iron sights, so I put them on the 300 and used a laser cartridge to align them. Hope to get to the range next week and check my zero at 50 and then 100 yards. If the scope mounts come in I'll take the 5.56 upper along and shoot it too.