Designed for use with RA-Tech WE Open Bolt precision GBB inner barrels
Can be used in AEG hopup units with the RA-Tech barrel
Made from high quality silicone rubber
Includes a flat-hop style hopup nub
Hardness: 70 - 80 DegreeCompatibility: For Maple Leaf / AST Hyrbid Series Airsoft Inner BarrelsMaterial: RubberManufacturer: Maple Leaf
