I'll go ahead and say it, powerfeeds with elbows, and twist locks are junk.
Hoppers flipping around, no fun to replace barrel detents........
field strip screw could now be too tight. loosen, get it finger tight, then try again. if the bolt sticks, then try tightening the field strip screw with
i'll go ahead and disagree with that. based on what i've seen over the past few years, and even what i have in my collection, steel bodies with twistlock