Hop-Up GBB / VSR-10 Bucking 4UANTUM Friction Pro - High Performance

The 4UANTUM Friction PRO GBB hop-up bucking is a top-tier upgrade for gas blowback (GBB) airsoft players who want maximum performance, precision, and consistency. With its precisely contoured contact patch, this bucking ensures ideal BB spin and stable trajectory, even when using heavy BBs up to 0.48 g.

Based on a traditional single-point design, the unique contour of the contact surface provides optimal friction for effective hop, while minimizing contact area. This means fewer inconsistencies and a flat, accurate, and repeatable shot path every time.

Made from high-quality rubber compound, the bucking offers durability, flexibility, and long service life – even under frequent use. It is designed for GBB airsoft guns and is fully compatible with hop-up units from Tokyo Marui, VFC, KJW, and other similar platforms.

The package also includes a hop-up nub that perfectly complements the bucking for balanced and consistent hop performance. Installation is simple and suitable for users of all skill levels.

In gas-powered airsoft, stability and consistency are key. The 4UANTUM Friction PRO GBB gives you a real edge through enhanced accuracy, increased range, and tighter groupings. Whether for target practice or competitive play – every shot is under control.

Key Features:

• Specially contoured contact patch – ideal for lifting BBs up to 0.48 g
• Minimized contact surface – eliminates shot deviation and enhances consistency
• Durable, high-quality rubber – long-lasting and wear-resistant
• Fully compatible with GBB units – fits Tokyo Marui, VFC, KJW, and more
• Includes hop-up nub – ensures balanced and even hop effect
• Improves accuracy, range, and grouping – for both casual and competitive players
• Easy to install – beginner-friendly upgrade