PDI V2 Hop-Up Chamber VSR-10

Allows you to use standard AEG barrels and hop-up rubbers, PDI brand barrels and W HOLD hop-up rubbers are recommended
Installation hardware included
Please note this is the newest generation VSR-10 hop-up unit by PDI, works with both tapered and non-tapered cylinder heads and is also compatible with Marui original style cylinder head.(the older gen PDI VSR-10 hop-up unit only worked with Tapered cylinder heads)