Something is wrong with the Geissele barrel nut.
In order for the mounting screw to catch the grove in the barrel nut, I have to keep the barrel nut loose. If I hand tighten as far as it will, the screw will not go in the grove. I ended up damaging the anodizing trying to force the screw in.
https://imgur.com/a/guXEu1n
Any ideas what’s wrong? Is it the barrel nut or handguard? The build is new.
https://youtu.be/Xjzv5PKJNxY?feature=shared