VFC MP5 Hopup Arm and Nub V2 vipertech

VFC MP5 Hopup Arm and Nub V2 vipertechThis arm provides more consistent hopup tension on the bucking for more consistent BB backspin. 7075 anodized aluminum. Rubber Nub. This new version is CNC machined rather than 3d printed. This hopup arm allows for the use of a rubber nub which will greatly improve your hopup consistency!

please note that the compression part of the spring should be connected to the nozzle pin while the tension part of the spring should be connected to the rear assembly that gets screwed into the back of the bolt

6061 aluminum internal plunger housing

I would highly recommend utilizing HPA with this recoil spring as I have done zero testing with regular propane gas

-Cutout for tension O rings specifically for open bolt guns such as the VFC M249

The height may need slight adjustment to get the correct height

To give you potentially essential information I measure each catch several times and write down the exact height of the catch surface on packaging

(helps to close receivers that previously needed to remove the pivot pin)

-4140 steel which means it is corrosion resistant

Special chamfering of nozzle to give the best seal to the inlet valve

-Black Nitrided

I would encourage you to complete this piston by buying Bavtechs Brass piston to complete this

Cap only comes with combo package