Hop-up rubber dedicated to SLONG barrels and hop-up chambers.
Thanks to the outer flanges, it stabilizes and seals perfectly in the hop-up chamber.
The specially selected mix of silicone rubber provides excellent sealing and work in a wide range of temperatures.
Dedicated to replicas with a power of 390-450fps
09 68 99 8989 (mon-fri 10-18)
info@sissos.com