Make sure that ammo can discharge.
That’s a dangerous weapon you’ve got the rifle leaning against in that third picture. Those Marshals can be deadly!
I have yet to find a bad review of Wolf Polyformance ammo.
I'm more concerned about the 3 Tapco mags. They have a bad rep on-line (though people who actually own them seem happy). Also have 3 Polish mags in need of a cleaning and paint job.
Sure wish I still had the half a dozen Chinese flatbacks from when I owned a MAC90 years ago. Rifle and magazines are long gone.