Don’t know anything about that caliber, but I have a primary arms 5.56 and it has been a good rifle. Only downsides to it are that the rails aren’t free-floated, and can’t be relaced because of the proprietary gas system (it is a piston driven gun, not direct-impingement).
If I had it do over again, I would just buy or build my own DI AR, no more fancy non-standard piston driven stuff for me. That said, Primary Arms makes a solid and quality product,
It is a shame DPMS picked up and left the state.