Very bad ass, but did you know that the AR 15 platform can shoot the 6.8 SPC?
The 6.8 SPC is a Win .270 bullet in a AR 15 sized cartridge.
At 300 yds the 6.8 SPC hits a target with 80% of the energy a .308 has at 300 yds.
Did you know that this cartridge was developed in the 90's for the military after that "Black Hawk Down" scenario happened in Somalia or whereverthefuck?
The 5.56 x 45 was not very effective taking those drug crazed Africans down that were shooting basically a soft .308 at them.
The AK 47 is a .308 caliber in a cartridge who's brass is only 39mm long.
Heavy bullet ~120-150gr, not much powder, equals a 150-200 yrd street sweeper.
The 5.56 x 45mm long is basically a .219 caliber with a shitload of powder behind it, but it weighs only 65gr.
Half the weight of the 7.92mm x 39mm AK 47 round.
For CQB, you can not beat the stopping power of an AK 47 rnd!!
I have an AR 15 lower that I plan to build into a 6.8 SPC, some day...
I'd rather build my Banshee instead!!