I finally found a place on the net selling most all the components for the M&P45, everyone had the 9mm and .40S&W parts but the .45 parts were a search. then I stumbled across
Speed Shooter Specialties. I ordered a spare trigger bar assembly and sear block assembly, and got them in two days. Are there any other parts you guys recommend I have on hand. I shoot the pistol quite a bit and though have had zero issues with parts breakage or even malfunctions, luck favors the prepared.