PolarStar F1 Centerline HPA Engine for V2 Gearbox Airsoft Rifles aeg magazine the Ares M4-KM7 is strongly

the Ares M4-KM7  is strongly built with a full metal body

PACKAGE INCLUDES: 1X TRACER UNIT

Tester battery and wall charger

The Heckler & Koch MP7 was designed to meet NATO requirements for a new type of weapon as well as cartridge that would help bridge the gap between a sub-machine gun and a rifle

To make sure everything is secure there is a zipper down the center

PolarStar F1 Centerline HPA Engine for V2 Gearbox Airsoft Rifles aeg magazine the Ares M4-KM7 is stronglyM4 M16 What is the F1? Like the Fusion Engine and JACK, the patent pending F1 is a high performance HPA (High Pressure Air) system which replaces the traditional piston and gears of an AEG with a programmable pneumatic system. Flow Control The unique flow control system uses an integral check valve to regulate the forward speed of the nozzle while maintaining the fastest retract speed possible. This system is also what makes the F1's "2 stage" firing