KA Tech MAC Polarstar Red QCU HPA M4 cqb this bucking is a simple

this bucking is a simple but effective upgrade for players looking to get more stable performance from their gas gun setup

Gearbox: Full Metal Version 2 (w/ 9mm Bushings)

then plug it into a DMR and load a different tune

The visible red laser and IR laser are both adjustable to hold zero

This piston stack is also an excellent solution for those dealing with a worn-out piston system that no longer provides consistent output pressure

KA Tech MAC Polarstar Red QCU HPA M4 cqb this bucking is a simpleEvery KA Tech rifle is built on internals and tuning weve spent the last four years perfecting. Our performance packages are the industry standard everyone else is chasing if you want something thats going to outperform everything else on the field, this is it. The QCU (Quick Carbon Upper) is a premium, competition ready HPA platform developed collaboratively by Gorilla Airsoft Technology and MAC Airsoft, then built and tuned by KA Tech. Engineered