Little Rocket Rail Adapters (Nerf N-Strike/Rival to Picatinny)

Works well and a great size. Holds on well on it's own but better when you pit something on it.

Perfect fit as they said and I’m super happy with it. Now I can’t put any picantinny stuff

I bought and installed a couple versions of these to install real optics and picatinny stuff to nerf blasters. That was silly, so I repurposed them to see if they worked to make Dart Zone into picatinny with mixed success. The ultra-slim ones will crack if too much side pressure is put on them while installing.

They fit snugly enough that you can prime a Proud Papa with the strong spring without any slippage. Product does what it does and does it well. Like many printed parts you may find it to be awkwardly tight to start with, but gets better with use.

They didn’t fit the bottom rail with my rival gun, so I clamped them on and heated them up, then they fit, but I still love them and now they fit all of my attachments