HK Army HSTL Carbon Fiber Tank w/ Standard Reg - 68ci / 4500psi (Black) BCA It reaches nearly 290fps with

It reaches nearly 290fps with HFC22 gas (Prolonged use is NOT recommend)

so it's perfect for carbines

the protective lens can be replaced by unscrewing the outer cap

Stores up 140 BBs in the reservoir

Specifications :

HK Army HSTL Carbon Fiber Tank w/ Standard Reg - 68ci / 4500psi (Black) BCA It reaches nearly 290fps withThe 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 HSTL Air 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 2oz with Standard