Kumi (CEO, Systema Engineering) has sent over details of a revised "MAX" version of their PTW. Here’s the details (you can also view them in PDF format), also included is news that their DIY "Challenge" PTW kit will be out on the 10th of December (PDF here):
A great number of special specifications:
Steel outer barrel standard specifications
Steel front sight post standard specifications
Butt plate with mil-spec bumper
Slide stock of new adapted strengthening material molding
Engine chamber: special specifications with all quenching-treated gear
480 model 2006 version motor
Newly adapted mil-spec strengthening device
120 rounds magazine standard
Appropriate battery: 12V/1300mAh 2/3 model battery (sell separately)
Moreover, special tuning anywhere is treated, this is certainly a fruit of SYSTEMA know-how.
High-spec tuning machine is finally unveiled
Overwhelming live-fire performance and feeling of fire surpassing previous work, complete custom.
Please make sure the real size, the real weight, the real balance, and the ultimate quality Kumi, (CEO, Systema Engineering)