My "new" Hakim's gas port screw was frozen solid and the plastic ajustment tool would not budge it. I tried various pliers with no success then I tried my M1 carbine gas piston nut tool (has 3 teeth the right size) it worked like a charm and didn't "bugger-up" the screw. The Hakim's gas port screw WILL (repeat, WILL) come out. The carbine tool provides plenty of leverage (sturdy metal) and can be purchased for under $10 just about anywhere. Works just as well on the Rasheed also. Just remove the handguard and go to it.