Grenade launcher pistol grip with detachable picatinny rail

I redesigned this pistol grip so I then can add a butt stock. all you need is two m3 screws to attach the rail to the pistol grip, once you've done that you can then attach a buttstock. have fun! The original site I made this can be found with this link. https://www.tinkercad.com/things/9E8N23mstEF-grenade-launcher-pistol-grip-with-detachable-picatinny-rail