VFC HK53/G3 Hopup Arm and Nub -Includes all hardware needed to

-Includes all hardware needed to install: npas housing

Redesigned most dimensions to better fit VT lowers

The exact height may differ from replica to replica

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

In practice this should allow bbs to enter the chamber and stabilize before being shot

VFC HK53/G3 Hopup Arm and Nub -Includes all hardware needed toThis arm provides more consistent hopup tension on the bucking for more consistent BB backspin. 6061 anodized aluminum. Rubber Nub. This hopup arm allows for the use of a rubber nub which will greatly improve your hopup consistency!