I was cleaning my P-01 and SP-01 and when reassembling I inadvertently installed the SP-01 slide stop into my P-01. I went to the range with the P-01 and experienced nothing but FTFs. My fault for cleaning 2 firearms at the same time. I figured out what I’d done after inspecting my sons P-01. I swapped out slide stops and everything is good to go now. My question is why would a SP-01 slide stop installed in a P-01 cause this?