I did some small edits to the original nerf scope by MartijnRoozendaal (linked as the remixed item), to be easier to print, and better fit my Nerf Longstrike CS-6 specifically. I printed the pieces specifically in this orientation, so they would be strong enough to survive the wear and tear of being put on and removed from the toy. To make the prints come together into one object, I solvent weld them together using acetone as this was an ABS print, but left the knobs "free" so they still maintain "functionality" of rotating around the central axis. Be careful when inserting the knobs into the central piece, as the stress caused by the pins could be enough to split your print in half though.