CNC Aluminum Hopup Chamber MXW unit is precisely machined to perform accurately and consistently on HPA MTW Milspec, Forged, Billet and MTW-9 series. The Hopup Chamber MXW unit is built with an aluminum Rotary Dial Knob for fine hopup adjustments, the precision Hopup Lever and 4mm Bucking Nubs (6mm Bucking Nubs are optional) to perform best with R-Hop and Standard-Hop to keep the BB shooting accurately and consistently on every single shot. The Hopup Chamber MXW unit is designed to accept the HPA MTW Engine M4 nozzle length, and fully compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BB during use. The Hopup Chamber MXW unit is wisely equipped with a self-centering inlet O-ring to ensure the hopup unit is inserted exactly in the center of the 11mm to 11.5mm inner bore HPA Engine nozzle outlet without wobbling. Also mounted the removable CNC Brass Side Wings to slide smoothly into the outer barrel slots, and included an advanced CNC Delrin Locking C-Clip to hold the inner barrel tight in place without wobbling and twisting.

Specifications: 

• Overall Length: 51.15mm
• Overall Height: 22mm
• Inlet Adaptor Outer Diameter (to fit into HPA Nozzle Outlet): 11mm
• Hub Outer Diameter (to fit into Outer Barrel): 12mm
• Hub Inner Diameter (to fit Nozzle): 7mm
• Material: Aluminum 6061

Includes: 

• 1 x CNC Aluminum Hopup Chamber M4W unit
• 2 x CNC Brass 2.6mm Side Wing
• 1 x CNC Steel Pivot Pin
• 1 x CNC Aluminum Hopup Lever
• 1 x CNC Aluminum Soft Flat Nub (4mm)
• 3 x Steel Nub Spring
• 1 x CNC Steel Spring Guide
• 1 x CNC Delrin Locking C-Clip
• 1 x CNC Brass Barrel Spacer
• 1 x Brass Barrel Spacer Holder Oring
• 1 x CNC Aluminum Rotary Dial Knob