KA Tech MAC Polarstar Blackout Euro Retro HPA M4 Polarstar HPA Engine:Fusion Engine Compatible with most M4 /

Compatible with most M4 / AR-15 style airsoft AEG rifles

This design also smooths and balances the output pressure

Optional High Pressure Spring (p/n 10000692) boosts maximum output to ~200psi

Enhanced Ventilation & Echo Reduction: Strategically placed ventilation configuration keeps the air flowing

Caliber: 6mm Polymer BB

KA Tech MAC Polarstar Blackout Euro Retro HPA M4 Polarstar HPA Engine:Fusion Engine Compatible with most M4 /Every 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 KA Tech MAC Retro is built around a custom Retro Arms receiver for an aggressive, old school feel with none of the performance trade offs. Designed with a full CNC aluminum and carbon fiber