HK Fossil - Eclipse CS3 - Hero Internal Marker Upgrades This adds comfort

This adds comfort

Muscle Spring Action with Most Dominant Force Professionally designed front and rear sights for quick aim under most demanding CQB applications Complete with Spare Shell

without the need of electronics or batteries

Inner Barrel: TBA

Product Length: Adjustable

HK Fossil - Eclipse CS3 - Hero Internal Marker Upgrades This adds comfortMeet the HK Fossil Eclipse CS3 which offers more, across many aspects of its design. Let's start with the NEW OP Core drivetrain. With its Industry First Fully Double Decoupled drive (FDD), and integrated auto dwell dynamics (ADD) it provides supreme consistency, efficiency and reliability, in our most powerful and intelligent spool drive assembly to date. Its 50% increase in valve chamber volume enables the OP Core to operate at an insanely low