The M4W CNC aluminum hop-up chamber is made to perform accurately and consistently on the HPA MTW Milspec, Forged, Billet and MTW-9 series. It features an aluminum rotary knob for fine hop-up adjustment, a precision lever, and a 4mm strutnuts (6 mm struts are optional) to work best with the R-Hop and Standard-Hop to maintain accurate BB shooting. The M4W hop-up chamber is designed to accept the HPA MTW Engine M4 nozzle length and is fully compatible with most soft and hard rubber accessories without loss of FPS or BB drop during use. It features an interchangeable OD 11mm inlet adapter to ensure that the Hop-up chamber is inserted exactly in the center of the 11mm inner hole of the HPA Engine nozzle without wobbling. (OD 11.5mm and OD 12mm inlet adapter is optional). Mounted removable CNC brass side wings ensure that they slide smoothly into the outer barrel slots. Includes CNC Delrin Locking C-Clip that holds the inner barrel firmly in place without wobbling or twisting.

Overall length: 51.15 mm
Overall height: 22 mm
Outside diameter of inlet adapter (to fit into HPA nozzle outlet): 11 mm
Outer hub diameter (to fit into outer barrel): 12 mm
Inner hub diameter (to fit into nozzle): 8 mm

Includes:

1 x CNC Aluminum Hopup Chamber M4W Unit
2 x CNC acrylic side cover
2 x CNC brass 2.6 mm side wing
1 x CNC steel pivot pin
1 x CNC aluminium Hopup lever
1 x CNC aluminium soft round tip
1 x CNC aluminium soft flat pressure plate (4 mm)
1 x CNC aluminium hard concave pressure plate (4 mm)
3 x steel spring
1 x CNC steel spring guide
1 x steel upper compression spring
1 x steel centre compression spring
1 x CNC Delrin Locking C-Clip
1 x CNC brass barrel spacer
1 x Brass Barrel Oring Bracket
1 x CNC aluminium rotary knob
1 x CNC aluminium inlet adapter (OD 11 mm)

Compatible with most HPA MTW Milspec, Forged, Billet and MTW-9 series.

Weight: 50g

Materials: Aluminum