On his extra channel, the Airsoft CamMan shows how to install the Silent Industries AEG Hop Unit. This airsoft upgrade utilizes a Top Dead Center (TDC) system for consistent pressure and allows for various nub types. The included trolley works with most nubs, but the system is optimized for their Black, Blue, ML Omega, or similar height nubs. It boasts the most travel distance for lifting even heavy BBs. The included tensioner ring system is easy to use with black and white rings for fine-tuning hop-up tension.