one of the four splatmasters I'm working on.
Most of the upgrades are internal:
aluminium bolt, valve body, rail, manifold. modified phantom power tube/cup seal/ jam nuts (takes complete phantom valve assemblies, just not the bodies or springs) CCI 12gram changer in grip.
Replaced all screws with stainless.
will be having four .680" J&J barrels made to fit.
Toying with cutting the bodies down to attach a phantom stock feed instead of the traditional tube in tube design. (i've lost full tubes while running because of this)
Here's a shot of the insides.