I purchased a new 75 Shadow (not SP01) a few months ago. Last week I picked up one of the pre-b disconnectors to drop in. Everything seemed to go smoothly, it function checked with and without the safety engaged without the slide on. I put the slide on and it still functions fine.
I rack the slide and... nothing. Hammer is locked back and the trigger is dead. I have to take it apart and remove the sear cage assembly to get it to reset.
Anybody happen to know what's going on?