Hop-up bucking engineered for stable long-range performance: the Wonder 50° profile developed for VSR-10 and GBB platforms (compatible with WE / Marui / KJW / VFC). Rubber formulation and pressure-point geometry reduce shot-to-shot inconsistencies and improve trajectory predictability.

Practical description & benefits
The slightly tight entry improves BB sealing and consistency of muzzle energy; the included C-Clip stiffens the lip for enhanced sealing; the specially shaped pressure point minimizes variation in BB rotation, resulting in steadier flight and improved long-range grouping. Optimized for inner barrels with a more open hop-up cut (for example most Tokyo Marui original barrels).

Technical specifications & compatibility

Model: WONDER — 50° version.

Declared compatibility: WE / Tokyo Marui / KJW GBB pistols, VFC / WE GBBR rifles, and VSR-10 sniper platforms.

Material: technical hop-up rubber (Maple Leaf).

Functional features: slightly tight entry; C-Clip for lip stiffness; pressure-point geometry for predictable trajectory.

Recommended hardness / FPS guidelines:
• 50°: up to 360 FPS
• 60°: 295–390 FPS
• 70°: 360–460 FPS
• 75°: 425–490 FPS
• 80°: 490 FPS and above

Internal reference / SKU: 3378-5341.

Indicative retail price on the provided listing: €9.90 (VAT included).

Package contents

1 × Wonder Hop-Up Rubber 50° (VSR/GBB version).

What the user gains
A plug-and-play hop-up bucking that helps stabilise groupings and maintain consistent trajectories at longer ranges, enabling finer hop-up tuning on VSR and GBB platforms.

Warnings & safety information (GPSR & Italian compliance)

Keep out of reach of children.

Handle only for maintenance and installation on airsoft replicas; if unsure, have installation done by a qualified technician.

Avoid prolonged exposure to high heat or aggressive solvents which can degrade rubber elasticity.

Do not tamper with, cut or permanently modify the product — unauthorized changes can compromise function, safety and compliance.

Store in a dry, room-temperature environment away from corrosive chemicals.

Instructions prepared in accordance with the General Product Safety Regulation (GPSR) and applicable Italian law.