Shot the Stag 10 yesterday with some xm80cs ammo I probably have 300 rounds through it. On paper, after my optic mount was tightened up will not match ammo we were getting about 2 moa accuracy. With match ammo, I have no questions if it will do moa.
I put in a Geisselle SSP trigger and buffer spring it needed to break in but got running smoothly after a 100 shots or so. As it was shot during the day the bolt would not go fully into battery but that could easily be from the buildup of shooting so much with a brand new receiver. And need to be cleaned. The Magpul magazines do work well. The time at first would not lock back and would drop from the rifle after the last shot.
My initial thoughts on this gun are it definitely needs to be shot and broken in but is definitely well put together. The lightweight Faxon barrel makes this gun nimble and works really well I applaud I RUN GINS for offering this barrel. Two things I am going to change is the stock to something with a tighter fit. And I would have liked a handguard with QD sling mounts.