I had not heard of the Polish version in 7.62mm NATO, I am embarrassed to say (so much for being an "expert") but I would think that it could be an important contender if it is as accurate and controllable as he M240.
I don't believe that the RTD&E folks in the army would even entertain the idea, but I think acquiring some of the Polish guns for comparison testing would be a valuable experiment.
I always had an open mind for examining other countries' weapons against ours: I once acquired a Soviet D-30 howitzer for evaluation for conversion to 5 inch/38 Navy (127mm)ammo instead of the LW 155 for a direct support howitzer for the Marine Corps. Even got to the point of training a Marine crew and getting the weapon and ammo safety approved before I was shut down firmly by higher headquarters..