VFC M249 Steel Piston vipertech Cap only comes with combo

Cap only comes with combo package

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

This new version is CNC machined rather than 3d printed

VT spec hop wheel is required for Wheel adjust (front adjust)

The mag catch sits more flush in every position

VFC M249 Steel Piston vipertech Cap only comes with combo4140 steel. Black Nitrided. 8 ounces. this is only the part of the piston that is threaded 14mm on each end. I would encourage you to complete this piston by buying Bavtechs Brass piston to complete this.