HK Fossil - Eclipse CS3 - Stealth (Black/Pewter) Bio BBs Our first barrel specifically designed

Our first barrel specifically designed and optimised to maximise the ballistic capabilities of First Strike and shaped rounds

The muzzle end is threaded and accepts all Stella Barrel tip designs (Including Apex adapter)

This Etha 2 does have the PAL compatible feedneck on it

and comes with adjustable elevation and windage turrets

HK Fossil - Eclipse CS3 - Stealth (Black/Pewter) Bio BBs Our first barrel specifically designedMeet 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