Thank you all for the great information.
I am sorry if anything in my post was misleading. It was not intentional, just possibly ignorant as to how to accurately phrase my question.
Again, I appreciate the information & will definitely save up to send in for the checkup & night sight replacement.

The Sig Service Package is worth the coin. I believe they offered a trigger job for Father's Day the year I sent my P226 SSE or it was done for customer satisfaction because my take-down lever broke. Regardless, I got a gun back that looked factory new, had a smoother lighter trigger, new night sights, all new springs, and functioned flawlessly. Never happier buying a service anywhere.