Recently put this together. Barrel is an AAC manufactured 9" 300 BLK.
This upper isn't what's going to be on this lower most of the time, this was mainly an experiment.
Shooting subs, which is all I want this 300 BLK setup for, the can hardly gets warm at all. Doesn't heat up the hand guard in the least bit.
The "thwack" when hitting the groundhog from a 187 grn sub is quite loud!
On another note, the big fire doesn't seem to have affected any of my groundhog hunting grounds. There appears to be just as many running around as in previous years. I'm guessing their hidey holes were deep enough to keep them safe.
