- Replacement hop rubber and nub for standard Marui type AEG barrels.
- Increased durability and grip.
- Improved air seal and oil resistance.
- Includes rubber bucking and nub.
Compatible with: most AEGs, PSS2 Aero Hop Chamber
- It may be necessary to trim the rubber to fit into some hop up units.
- Soft: below 400fps
- Hard: above 400fps