Which Sear Housing Block?

[S&W627shooter]

I have an M&P 9 with a "thumb safety ready" frame and sear housing block that will not accept an APEX RAM.  Which sear housing block do I need to order to be able to install a RAM?

I bought a S&W sear housing block from midwayUSAthat works with the RAM, but it does NOTt work in my frame.  It only works on the ILS frames, not with the thumb safety ready frames.  Any suggestions? https://www.midwayusa.com/product/546264/smith-and-wesson-sear-housing-block-without-integral-lock-and-magazine-safety-s-and-w-m-and-p-m-and-p-compact-9mm-luger-357-sig-40-s-and-w?utm_medium=email&utm_source=service&utm_campaign=order-confirmation&utm_content=product-description-link

 

 

[DCSigCZ]

I do not know the answer to your question, but I am sure Apex does. You will have to wait until tomorrow, but call them then. They are on Pacific time so time your call based upon that.