MAXX CNC Aluminum Hopup Chamber M4A - PRO uac-ultimate-airsoft-custom 1 - DIY add empty

1 - DIY add empty mag

This updated KWA AEG3 RM4 SR10 also features a mechanical/electrical cut-off system to stop firing when the magazine is empty at 30 or 120 rd

Tested and approved by industry professionals

and Marui M4 system compatible for easy tune-up

This Marui SGR-12 Shotgun is Automatic Electric Shotgun (AES) System

MAXX CNC Aluminum Hopup Chamber M4A - PRO uac-ultimate-airsoft-custom 1 - DIY add emptyCNC Aluminum Hopup Chamber M4A Pro (with BB Latching System) unit is precisely machined to perform accurately and consistently on Tokyo Marui (include G&G, KRYTAC, except KWA) Standard M4 M16 AEG series. The Hopup Chamber M4A unit is built with an aluminum Rotary Dial Knob for fine hopup adjustments, the precision Hopup Lever and 4mm Bucking Nubs (6mm Bucking Nubs are optional) to perform best with R Hop and Standard Hop to keep the BB shooting