In my humble opinion, based on using a CT laser on my K9, the glow from the pin is a non-problem as you can't see it when the gun is presented to aim. Besides that there will still be a lit "glow' due to the slide and your finger proximity to the laser. However, to eliminate the pin catching some light it appears you'd have to grind the pin down flush with the slide. It looks like you'd still have about 1/8" of pin left before the spring slot. I can't imagine the pin would fail even if cut flush. I wouldn't go any further though.
"Corpseman?" Corpseman! Who looks stupid now, "The Decider" or "The One"?