VFC AKS 74 front flashhider adator
 

I cant seem to pull it off, even after i take off the set screw. I initially thought it might have been just loctited on there or something, but after trying to crank it in the CW direction to loosen it.. it doesnt budge...

I dont want to use the front sight as a leverage point either, in fear or breaking it. Anyone got any ideas?