Just finished some Nerf irons, I've been trying to find pretty, minimal adjustable ones I like for a while now, but nothing has quiiiiite scratched the itch for me.
https://www.printables.com/model/583326-adjustable-fibre-optic-style-filament-picatinny-ir
I've also made a couple of changes to my screen mount to match with the front sight - I'll try get round to uploading that properly soon.