So I am puzzled. I have a BCP lower and a parts kit from Delton. The Delton kit came with the standard roll pin for the bolt catch. The BCP lower came with what I think to be a tensioning screw for the upper and lower and two small set screws. I can’t figure how how to attach the attach the bolt catch. The Delton roll pin is so loose that it slides out. I’ve read online that BCP has a special way of attaching the bolt catch which uses screws but I can’t figure out how to do it. I’m assuming it involves the small set screws but am not sure.

Thanks!

Thanks a lot for the response. It looks like they got mixed up and included a second set screw instead of the 6-32 dog leg set screw. I will need to call them tomorrow.