I've only modded a pair of Mavericks, and it's some basic modding too - Air restrictor removal, tightening the opening in the plunger tube, and filling the plunger for some more effective air compression.
I'm currently working on a miniature air compressor to mount to the back of a nerf gun for semi-automatic fire, similarly to a Paintball gun, in order to completely replace the usual bike-pump solution. As of yet, I only really need a 9v DC motor to make it run. The pressures should be around 50PSI in the tank, since any more than that would most likely slip through the intake valve (homemade PVC Air Compressor ftw), and only a small portion of that would be used to actually fire the dart - Thus, allowing for semi-automatic fire.
Again, I'm dirt poor, so I can't take pictures of the Semi-Automatic I'm working on yet. It's still mostly just a concept. Will post MS Paint diagrams after I get my house a little more painted today.
I'm also experimenting with ammo a little bit for the time being. I've noticed that a ~1/4" stefan with a copper BB and hot glue in the tip with a ~1/8" hollow in the rear will perform just as well as a more standard size, so I've been making extra small stefans. This has the added benefit of being able to double or triple load them for a shotgun effect. I would NOT recommend loading them up to the length of a standard size stefan, due to the weight issue... Though this could be countered in a system with much more pressure. Only tested with Mavericks.
Edited by Vereiah, 23 May 2010 - 12:33 PM.