4UAD Magnus Pro VFC/GHK GBBR Hopup Chamber with TDC mws Introducing the Gen 4 HPA

Introducing the Gen 4 HPA CRBN Uppers - a new level of durability

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

that gives the most reduction in FPS output

Altough this is designed for AEG

4UAD Magnus Pro VFC/GHK GBBR Hopup Chamber with TDC mws Introducing the Gen 4 HPAFantastic 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