Anyone out there running AR pistols? Putting one together in 300 Blackout and curious if anyone else has experience with these suckers. Specifically, wondering about optics and range. I have a rifle scope kicking around but wondering if a pistol scope would be better. I hope to get a Sig arm brace that may or may not be used up on the shoulder occasionally. Also wondering about accuracy and energy past 100 yards. Looking at running 110 gr VMax or Barnes TSX bullets over H110 powder (IIRC).

Thinking of this primarily as a tree stand gun but wondering i 200 yards shots will be ill-conceived. Barrel is 8.5".

Hadn't really considered anything in 223 for a pistol since can't use that round on deer here, but wondering now if an upper in 10.5-12" would work on yotes out to 200 or if just isn't gonna do the trick.