Tbh, for my next build, I think I'm going to go for a 10.5 pistol. Not sure what "brace" i'm going to put on it to stabilize against my forearm as of yet, but figuring it all out is half the fun.
I went with an AR variant. XM 177 specifically. My issue is that I am left handed so need the brass deflector, but the furniture worked out with the green.