Airsoft Tech documents the process of changing the hop-up rubber on a replica airsoft gun. He starts by performing a baseline test with the original rubber to measure the grouping. After achieving a good grouping, he replaces the original Maple Leaf hop-up rubber with a new one from the brand For 4UANTUM.

Rummbolt puts the 4UAD Smart Airsoft Hop-Up Bucking into a MK18 for a shooting test... "If you are into Airsoft for a while, you may be familiar with ‪4UAD Smart Airsoft‬: A quite popular Youtube Channel from Taiwan, dealing with innovative airsoft products. One of their latest highlights is the "Friction Pro" Hop Up bucking, an inhouse development which caused some kind of a little hype in the community. It claims to increase consistency and precision of your replica significantly.

The Airsoft Yellow Label Airsoft Man tests the 4UANTUM Friction Pro Hop-Up Bucking from 4UAD Smart Airsoft if gives some performance enhancement to the Tokyo Marui M4 MWS GBB Rifle. The Friction Pro hop-up bucking is designed for consistent, accurate shots by creating a centered spin axis and enough friction to lift even heavy BBs. Its unique design minimizes contact surface to ensure precision.

4UAD Smart Airsoft recommend their 4UANTUM Performance Lubricant Pen for use on lubricating your airsoft guns (of course). UAD and J-Smooth have jointly developed a high-performance lubricant for Airsoft guns. It contains Polydimethylsiloxane, TPFE, and paraffin wax, all of which are inert and non-toxic.