Best set up for 300BLK?

[Bullet41 (Patrick Moses)]

I have both a 300BLK rifle and pistol.
My favorite is my pistol build. I usually run it with my suppressor and it is pretty fun. I love the puff and then clang when we go to the range.
It’s not too small as it has a 10.5 inch barrel, but it just feels right to me.