Why, why screw with a good thing?
Well, it's really easy to unscrew. The Schuster plug comes factory set to vent most gas so the action will not operate. Directions say to start by closing or screwing in the plug 1/4 turn at a time until the action functions. I installed one in mine and have it set so it functions slower than normal even with mil spec ammo. Theory is that slowing it down protects the operating rod. My gun has been totally reliable after adjusting.
