ORGA Airsoft have a preorder on for the Systema Infinity kit for the PTW that has been mentioned here a few times now:
SYSTEMA INFINITY for PTW
ORGA AIRSOFT started Pre Order on ORGA WebShop.1st batch special price promotion, The limited number for the first time sale 2000 sets
SYSTEMA NEW infinity Gear Box Kit include following components.– Infinity Gear Box (Backwards wiring model)
ORGA Airsoft
including high torque internal, brushless motor and DSG
– M130 cylinder unit for this kit
– 150mm inner barrel assembly for this kit
– Dummy motor
– Hexagonal Wrench size 1.27mm/1.5mm