As my grandmother said, "Anything mechanical, give it a good whack!" :slam:
I guess to make sure the gun is totally de-gassed, and get a rubber grip or something to get a hold of that little lip to twist. It should twist. Have you ever removed the bolt before? You may want to oil around the twist piece, to try to loosen it...and when you get it off, clean and re-oil so it wont fook later. IF you decide to hit your cocker, take off the E2 first.
enid--Why swear at it when you can just beat the hell out of it?