I tried this when it first dropped, didn't work and I just got around to trying it again as I need to order some things from SCS and I like this design but I can never get the Kabuto TURD to work. I don't know what I'm doing wrong but this is as far back as the BCG will go. I tried pulling it back further and when I did, it locked up and had to push the rear takedown pin out, let a small gap pop up and the BCG flew forward.

I just can't get anywhere with this. I'm going to try the Kev remix as it takes milspec 3 pos but I wanted to see if this worked to begin with, which it didn't.