GBU Custom "Predator" Slim Line Universal Hop Up HLF ARP 9 This is the GBU custom

This is the GBU custom series guide plug for your 4

It brings simplicity and style together to create a timeless look on your gel blaster

2mm inner diameter

Compatibility: Most Version 2 gel blaster AEGs

GBU Custom "Predator" Slim Line Universal Hop Up HLF ARP 9 This is the GBU customElevate your gel blasting game with the GBU Slim Line Predator Hop Up. Its ultra slim aluminum design ensures compatibility with flash hiders and competition gas pistols, while the aero formula design enhances accuracy and range. Unleash precision like never before, and redefine your gameplay with this affordable yet high performance hop up. What Is and How Does a Hop Up Work? Rizer Specifications Made from Alloy For Maximum Strength. Outer Diameter