Mine did not come with an adjustable gas block, mine has had several cycling and accuracy issues. Been back to POF, put a new barrel on and did a tune with my suppressor. I have the POF gas block on it now. Improved cycling to some degree, but it was horrendous prior to the trip back, and now it's bette, but it has cycling issues still.
Mine could not be considered dependable at all.
I think I'm going to get rid of it