The Ares M249 hop unit is designed for use with the Ares M249 and is not comptabale with any other M..
This is a high quality aftermarket SIg 552 AEG hop up chamber from JJ Airsoft. This polymer hop..
CNC Aluminum Hopup Chamber ME Pro (with BB Latching System) & UV LED Tracer unit is precisely ma..
4.5mm and 6mm replacement R-Nubs for the MAXX airsoft Hop Unit Series select which type above. ..
For almost a year now we at Dave's Custom Airsoft have used Pro-Win hop chambers in every single rif..
The highly precisice C-Clip results in a tight fir to the barrel base this not only helps to keep th..
This polymer M4 AEG rotary hop unit is made from a strong and durable blue polymer and comes complet..