HK Army HSTL - 68/4500 Carbon Fiber Tank (Standard Reg) Color:Purple 1v lipo stick batteries in

1v lipo stick batteries in the PDW stock

it's a perfect fit and size

piston will remain in rear position after each shot with spring already compressed

Package includes battery and charger to get started

Compatible with other WE and Tokyo Marui Hi-Capa double stack style magazines

HK Army HSTL - 68/4500 Carbon Fiber Tank (Standard Reg) Color:Purple 1v lipo stick batteries inThe HK Army HSTL Air System has been developed with performance and affordability in mind. The comprehensive system pairs a lite weight carbon fiber bottle and a reliable aluminum regulator with an output pressure of 800 psi. The AeroLite system includes a 5 year hydro cycle and is available in many color options. Features: 68 Cubic Inch Lite Weight Bottle w 4500 psi Capacity Reliable Aircraft Grade Aluminum Regulator Weight 2lbs 9oz 800 psi Output