4UAD Magnus Pro VFC/GHK GBBR Hopup Chamber with TDC mws The nub is designed to

The nub is designed to be held straight as it is pushed down

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

It includes a manometer on the side to help show your current output pressure

that gives the most reduction in FPS output

"Low" and "Very Low

4UAD Magnus Pro VFC/GHK GBBR Hopup Chamber with TDC mws The nub is designed toFantastic 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