re: Question about the 300 blackout..

Lets see..

1. Ability to put more energy on target than 5.56 (supers comparable to 7.62x39) at ranges up to 300 yards, out of an 8 inch barrel.

2. Switch from subs to supers with nothing more than a mag change.

3. Shoot 220 grain subsonic bullets with a can so quiet that all you can hear is the bolt sliding.

4. Easy to convert bulk available 5.56 brass into 300 BO cases for reloading.

5. Capable of shooting a wide array of readily available .308 bullets all the way from 110 gr to 220 gr with no loss of reliability.

6. Easy shooting, minimal recoil, compact (with 8 inch barrel), perfect PDW.

Personally, I prefer the ballistics and availability of 7.62x39, but I hate the AK platform. This is the closest thing to 7.62x39 from a ballistics standpoint that is functional in an AR.