Okay, a little poking around and I came up with this...
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Basically a :
Ruger 10-22 receiver/18.5" SS tapered barrel. Volqartzen triggergroup/hammer+spring/exctractor.
TM P90 shell
Hurricane Rubber P90 stock extension.
REAL FN Tritium Ring Sight with REM Modification.
NITRO Metal front receiver, milled to tight fit 18.5" SS tapered barrel.
TM fake P90 Mag.
REAL Phantom Comp/Flashhider.
Non restricted, prolly fairly cheap and fun... all you guys have to do is source and stock the parts and sell em as a kit!
You'll be rich, we'll be thrilled!
yay! lol