HK Fossil - Eclipse CS3 - Stealth (Black/Pewter) Holsters & Gun Cases Rotary Style Hop Up Unit

Rotary Style Hop Up Unit

Midnight: All parts are matte black

No springs needed-

Length: 755mm - 840mmWeight: 2820gInner Barrel: ~330mmMagazine Capacity: 150rd Mid-Cap

The exhaust valve and valve guide also incorporate a very large post-release sensing surface area that is tuned to complement the lever mechanism and the forces generated by the reciprocating parts

HK Fossil - Eclipse CS3 - Stealth (Black/Pewter) Holsters & Gun Cases Rotary Style Hop Up UnitMeet 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