4UAD Magnus Pro VFC/GHK GBBR Hopup Chamber with TDC VSR-10 5mm allen key (not included)

5mm allen key (not included)

Do not use any lubricants in the regulator

And altough the grip is confirmed to work with G&G style AEG lowers

Additionally as an industry first

https://perfectairsoft

4UAD Magnus Pro VFC/GHK GBBR Hopup Chamber with TDC VSR-10 5mm allen key (not included)Fantastic 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