Engineered for unmatched consistency and accuracy, the CNC Aluminum Hop-up Chamber M4W is precision-machined to seamlessly integrate with HPA MTW Milspec, Forged, Billet, and MTW-9 series. Designed for high-performance airsoft applications, this hop-up chamber ensures reliable operation with every shot.

Key Feature

• Aluminum Construction Airsoft Hop Up Chamber
• Aluminum rotary dial knob for fine-tuning
• Precision hop-up lever
• 4mm bucking nubs (optimized for R-Hop & Standard-Hop)
• Supports most soft/hard rubber buckings
• Maintains FPS without BB drops
• Interchangeable inlet adaptor (OD 11mm) centers in HPA engine nozzle outlet
• Removable CNC brass side wings for smooth outer barrel slot installation
• CNC Delrin locking C-clip secures inner barrel (prevents twisting/wobbling)

Package Included

1 x CNC Aluminum Hop-up Chamber M4W (new version)
2 x CNC Acrylic Side Cover
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 Round Nub
1 x CNC Aluminum Soft Flat Nub
1 x CNC Aluminum Hard Concave Nub
3 x Steel Nub Spring
1 x CNC Steel Spring Guide
1 x Steel Upper Compression Spring
1 x Steel Center Compression Spring
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
1 x CNC Aluminum Inlet Adaptor
1 x Shim set
1 x Oring set