• 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

Installation notes:

• It may be necessary to trim the rubber to fit into some hop up units.

Hardness selection:

• Soft: below 350fps
• Firm: 350-400fps
• Hard: above 400fps