After the PUNISHER AR I built I wanted to do another AR but in an alternative caliber. Heavily leaning towards 6.8 SPC I was researching other calibers and became very intrigued by the .300 BLACKOUT round. I could go into depth myself but just read the info on this site:
http://300aacblackout.com/
Essential the round was designed for supersonic and subsonic (silencer) use. Their game plan was develop a .30 caliber launched by a standard AR using all the 5.56 mm parts, including the magazines at 30rds, only difference is the barrel. (like duh!?)
It has Supersonic rounds with similar ballistics to the russian 7.62x39mm and even exceeds the 7.62x39mm at 300 meters. Perfect! Subsonic I probably wont use since I am skeemish over the steps to get a silencer.
Here is the .300 Blackout (left) next to the standard 5.56mm (right).
I again used SPIKE's tactical Lower receiver & Bolt Carrier group. Aero Precision upper reciever, ER Shaw 16" .300 blackout heavy barrel, TROY Ind 11" free float VTAC battlerail, low profile gas block. Yankee Hill Phantom flash hider, MAGPUL stock, grip, angled foregrip, PMAGs, and BUIS sights, Noveske K-9 Barricade support, and multi-postion flashlight mount. THis time however my funds were low to do another Eotech so I found this great little Aimpoint clone, it is really nice and considered weapons grade. Also added the 3x magnifier.
Now I cant wait to build up ammo and go shoot!!!