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the speedsoft M4 trend has been moving towards HPA rifles with grip-bottle adapter
The 4UAD Friction Pro GBB Bucking is here
1 x regulator
The grub screw can be adjusted through the front of the nozzle when installed
Downgrade Valve Set 2.0 For Tokyo Marui AKM & AKX GBBR lithium the speedsoft M4 trend hasDowngrade FPS Muzzle Energy for TM AKM AKX GBBR rifles. Set of 4 sizes. This little floating valve is a replacement part for the original floating valve in the TM GBB AK. It comes in 4 different sizes, each giving a preset amount of gas volume through the nozzle to accelerate the BB. The smaller the volume, the lower the FPS. Each valve has a unique marking to indicate it's powerlevel; High, Medium, Low and Very Low.