I have for sale couple of these sights, new, unopened boxes, picatinny mount included:
(https://static1.nordic.pictures/23266339-thickbox_default/vortex-red-dot-rifle-scope-viper-6-moa.jpg)
https://vortexoptics.com/vortex-viper-6-moa-red-dot.html
249 euros, shipping included.
229 euros, shipping included.