The M4W CNC Aluminium Hopup Chamber is precisely machined to perform accurately and consistently on the Wolverine Airsoft MTW Milspec, Forged, Billet and MTW-9 series.

The M4W is built with an aluminium 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 M4W 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 BBs during use.

It is 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.

Removable CNC Brass Side Wings slide smoothly into the outer barrel slots, and also included is an advanced CNC Delrin Locking C-Clip to hold the inner barrel tightly in place without wobbling and twisting.

***Test results: FPS might be increased from 10FPS to 30FPS over the stock setup. Please check your FPS!

Package Includes

• 1 x CNC Aluminium Hop-up Chamber M4W unit
• 2 x CNC Acrylic Side Cover
• 2 x CNC Brass 2.6mm Side Wing
• 1 x CNC Steel Pivot Pin
• 1 x CNC Aluminium Hop-up Lever
• 1 x CNC Aluminium Soft Round Nub
• 1 x CNC Aluminium Soft Flat Nub
• 1 x CNC Aluminium Hard Concave Nub
• 3 x Steel Nub 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 Spacer Holder O-ring
• 1 x CNC Aluminium Rotary Dial Knob
• 1 x CNC Aluminium Inlet Adaptor (OD11mm)

Specification

• Overall Length: 51.15mm
• Overall Height: 22mm
• Inlet Diameter (to fit into HPA Nozzle Outlet): 11mm
• Hub Outer Diameter (to fit into Outer Barrel): 12mm
• Hub Inner Diameter (to fit Nozzle): 8mm
• Material: Aluminum 6061

Compatibilty

• most HPA MTW Milspec, Forged, Billet and MTW-9 series

Installation notes

• Use proper tools for disassembly and reassembly of the gearbox be careful of the spring tension.
• Bearing lubricant oil/grease is recommended for smooth operation