Friction Pro GBB Hop Up Bucking [4UANTUM]
The Friction Pro Hop Up Bucking from 4UANTUM is a high-performance hop-up rubber designed for gas blowback platforms. Its unique contact patch geometry focuses on creating a centered axis of spin, helping produce a stable trajectory and improved shot consistency.
The design minimizes the contact surface with the BB while maintaining sufficient friction to generate reliable backspin. This approach helps reduce inconsistencies and can support accurate shots and tighter groupings.
Constructed from high-quality rubber, the bucking is compatible with many Tokyo Marui, VFC, KJW and other TM-spec GBB hop-up units. The contact patch is capable of lifting BB weights up to around 0.48 g, making it suitable for setups using heavier ammunition.
Key Features
Friction Pro hop-up bucking from 4UANTUM
High-quality rubber construction
Optimized contact patch for centered BB spin
Supports heavier BB weights up to approximately 0.48 g
Compatible with many Tokyo Marui, VFC and KJW GBB platforms
Includes hop-up nub for installation
Upgrade your hop-up system with a bucking designed to deliver consistent performance and reliable accuracy.














