The 98-68 Tippmann 98 Flatline Rear Sight Shroud Nut was discontinued by Tippmann. They’re not ordering more and they’re all out. This was a black nut. We’ve re-sourced the part from a different vendor but these new ones are silver. So if you need this nut you’re not out of luck. TippmannParts.com has you covered. But you’ll get a silver one now instead of black. Nothing a little black sharpie won’t fix.