4UANTUM Friction Pro GBB Hop-Up Bucking – High-Performance Airsoft Bucking

The 4UANTUM Friction Pro High-Performance GBB Hop-Up Bucking is designed to improve accuracy, consistency, and BB flight stability in compatible gas blowback airsoft pistols and rifles. Developed by 4UAD Smart Airsoft, this premium rubber bucking features a specialized contact patch that creates a more centered axis of backspin, helping produce flatter trajectories and more consistent shot groupings.

Unlike conventional hop-up buckings with larger contact surfaces, the Friction Pro uses a precision-contoured single-point contact design to maximize friction while minimizing unnecessary contact with the BB. This design helps deliver consistent backspin and is capable of lifting heavier BBs weighing up to 0.48g, making it an excellent option for players looking to improve their airsoft gun's accuracy and effective range.

Designed for compatibility with many Tokyo Marui-spec gas blowback platforms, the Friction Pro can be used in a variety of GBB pistols, gas blowback rifles, and compatible VSR-style hop-up systems. Its durable rubber construction provides a balance of grip and flexibility, while the included hop-up nub supports proper pressure application. Whether upgrading a Hi-Capa pistol, improving a GBB rifle, or rebuilding a precision airsoft platform, the 4UANTUM Friction Pro offers a performance-focused solution for more consistent shooting.

Features

• High-performance GBB hop-up bucking

• Developed by 4UAD Smart Airsoft / 4UANTUM

• Precision-contoured single-point contact patch

• Designed to produce centered, consistent BB backspin

• Capable of lifting BB weights up to 0.48g

• Helps improve accuracy and shot consistency

• Supports flatter BB trajectories

• Minimizes unnecessary BB contact inside the hop-up system

• Durable rubber construction

• Compatible with many Tokyo Marui-spec GBB platforms

• Suitable for compatible gas blowback pistols and rifles

• May fit compatible VSR-style hop-up systems

• Includes hop-up nub

• Ideal for airsoft accuracy upgrades, repairs, and custom builds

Specs

• Manufacturer: 4UAD Smart Airsoft

• Brand: 4UANTUM

• Series: Friction Pro

• Product Type: GBB Hop-Up Bucking

• Caliber: 6mm Airsoft BB

• Power Source Compatibility: Green Gas / CO₂

• Hop-Up Design: Single-Point Contact

• Material: Rubber

• Color: Orange

• Maximum Advertised BB Weight: 0.48g

• Primary Compatibility: Tokyo Marui-Spec GBB Hop-Up Systems

• Additional Compatibility: Many WE, KJW, VFC, and compatible VSR-style platforms

• Installation: Some models may require fitting or modification

• Package Contents: Hop-Up Bucking and Nub

• Country of Origin: Taiwan

• Manufacturer SKU: 4U-GBB-001

• Alternative Product Code: GBB-001