MAXX CNC Aluminum Hopup Chamber M4P - PRO ASG/ActionSportGames This airline is a longer

This airline is a longer 42" extended version of the 36" line that comes standard with the Valken SLP QD Air Rig 36"-Black #78846

Cheek Piece

Eliminating the factor of hardware allows for complete reliability and durability

Outfitted with a 16″ bull barrel and a 10″ free float rail system

MAXX CNC Aluminum Hopup Chamber M4P - PRO ASG/ActionSportGames This airline is a longerCNC Aluminum Hopup Chamber M4P Pro (with BB Latching System) unit is precisely machined to perform accurately and consistently with HPA PolarStar Engines on standard M4 M16 platform. The Hopup Chamber M4P 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 accurately and consistently