Not talking artillery here. Talking small arms ammo. I'm pretty sure Russia doesnt come close to producing 2m artillery rounds per year. Saw an article the other day about them running out of artillary barrels. If they couldn't manufacture enough barrels to keep up with shooting, I doubt their general manufacturing capacity.

Outside of that, that's two million non-NATO small arms rounds being donated by the private sector. Pretty sure the government would send M4s and SAWs with 5.56.