4UAD Magnus Pro VFC/GHK GBBR Hopup Chamber with TDC mws that gives the most reduction

that gives the most reduction in FPS output

one for 1/8" hose insertion and one for QD connection like other HPA airsoft regulators

Altough this is designed for AEG

This little floating valve is a replacement part for the original floating valve in the TM GBB AK

"Low" and "Very Low

4UAD Magnus Pro VFC/GHK GBBR Hopup Chamber with TDC mws that gives the most reductionFantastic craftsmanship and cool looking design. This new hop up chamber from 4UAD in Taiwan is a great upgrade for your VFC or GHK M4 GBBR. The anodized gold colors are visible when retracting the bolt, making sure to turn heads on the field, as well as hit heads with it's price TDC hop up adjustment system. The Top dead center TDC adjustment system guarantees that the hopup nub is always centered during adjustment, increasing consistency across