Ghostopera

So i tried loosening it with a flathead screw. Only problem is like one quarter of the clip is visible and the other end is completely hidden this is just a pain now wow ?

Hi ive tried turning it CCW but the little metal lin is wgat stops it budging its awkward

Pretty much as the title reads, how do i take this off? A friend gave me a good deal on this vfc 417 gbb and he already had the g27k handguard on the way, just wanted to know how i can remove the flash hider so when time comes i can fit the g27k one. Thank you