Summary

I used the basic dimensions and shape from fempoppy's excellent "extended down" release lever for the Dart Zone Pro to create this version. The top of the release now sits flush with the top of the blaster, the edges of the lever have been chamfered for comfort, and the lever now has a little kick out at the bottom for your thumb to catch as you strike the lever. Additionally the spring post is octagonal now to make it simpler to apply supports (although it printed fine for me without supports when I forgot to enable them in a test print).

Prints on its side, supports not required but I would still enable them under the bottom face of the spring post.

For my 3 shot inline barrels: