Update: I got my pistol back from Smith & Wesson a couple days ago. I reinstalled the optic using a metal base plate and different screws. I took everyone’s advice and use a torque wrench. Instructions on the site said 15 inch pound. When I install the screws, the angle is not perfectly vertical. There’s a slight angle which caused the inability for my torque wrench to reach the 15 inch pounds. The wrench contacted the optic as I neared max inch pounds. This caused the screw bit to skip and start to strip the screw. So to finish it off I just gave it a little love tap with a stand alone Allen wrench. I have not shot it yet, but crossing my fingers, it does not break again.
I’d assume once you start using aftermarket stuff, your potential for warranty repairs is reduced. Hopefully everything works like it’s supposed to this time around.
I’ll also echo the love for the fat wrench. I’ll never install any scopes or action screws again without it. It’s crazy how little torque 15 inch pounds really is.