VFC HK53/G3 Hopup Arm and Nub Never lose your cap again

Never lose your cap again — it hangs with you

-Includes all hardware needed to install: npas housing

Redesigned most dimensions to better fit VT lowers

The product will be made after preorders close and there may be extras made which will be available for sale after all items are made and in stock

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

VFC HK53/G3 Hopup Arm and Nub Never lose your cap againThis 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!