A client came in to have a set of sights removed and replaced on a polymer semiautomatic pistol. He was replacing with Trijicon Bright & Tough Night Sights ⇒.
Thia client’s particular model requires a set screw in the rear sight. The new Trijicon sights didn’t come with the set screw. They normally don’t, but I have always just used the set screw from the sights being removed. It usually works out well. This time the set screw from the old sight didn’t fit in the new Trijicon sight.
I talked to Trijicon and all of the pistol sights requiring a set screw in the rear sight take a 5-40 x 3/16″ set screw. Good to know.
Rumor has it that Trijicon will start shipping the screw with all sights that require the set screw by mid-2017.