Nerf Tri-Rail Adapter
thingiverse
Add even more rails to your Nerf blaster by referring to the picture for print orientation. You'll need two 8-32x1.25" screws and two nuts, which can be found at https://www.mcmaster.com/#91251a201 and https://www.mcmaster.com/#92362A130. The 'springs' snap into place over the main parts, with the pointed end of the springs facing the back of the adapter. Note that the STL file units are in inches - you can use math or Google to find the scale factor to mm. This Nerf tri-rail adapter is also available for sale on Etsy at https://www.etsy.com/listing/594842061/nerf-tri-rail-adapter.
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