Wanted to thank all the Tutorials posted is the download section for the M40. In particular the M&S Series Trigger Tune UP and Sear Mechanism Disassembly and Reassembly. In just following the polishing tips for the firing pin spring guide (#44), trigger bar(#16), firing pin (#43), and firing pin...

I'm looking for a resource to help me with reassembly on my trigger group. I'd like to take it all the way down to the trigger group frame and polish the sides of the sear and drop safety lever with some 1500 grit. I have downloaded and studied all the BT guides and videos he offers on this...