Oops, I feel silly now... I posted pictures of mine apart to show as an example without noticing that you had already done so. How did you get the joint check out of the barrel lug? It looks to me like your joint check is a one piece machined part... Mine seems to twist in opposite directions like it might unscrew or something. I'm uncertain though, I think I'll go look at it... But I'm afraid I might not get it back together again LOL.