Hop Up Rubber Monster 75º for KSC/KWA System 7 II GBB [Maple Leaf]
The Monster 75º Hop Up Rubber from Maple Leaf is a performance hop-up bucking designed for KSC and KWA System 7 II gas blowback platforms. Built with a specialized concave contact patch, it increases the surface area that engages the BB, helping generate stable backspin and improved shot consistency.
Manufactured from silicone rubber, this bucking is tuned for System 7 II / NS2 style hop-up units, commonly found in many KSC and KWA GBB pistols and SMGs. The internal design helps maintain stable BB contact while supporting a reliable air seal within the hop-up chamber.
With a 75º hardness rating, the rubber compound is suited for higher power setups and heavier BB weights, offering durability and stable hop application in demanding configurations.
Key Features
Monster series hop-up bucking from Maple Leaf
75º hardness rating
Concave contact patch for improved BB stabilization
Made from silicone rubber
Compatible with KSC / KWA System 7 II GBB platforms
Upgrade your hop-up system with a bucking designed for consistent performance and reliable accuracy.








