Maxx CNC Aluminum Hopup Chamber M4W for MTW

The Maxx CNC Aluminum Hopup Chamber M4W is a precision upgrade designed for MTW-based HPA setups. Built for MTW Milspec, Forged, Billet, and MTW-9 series, it delivers reliable hop-up control and repeatable accuracy.

• Material & Construction: CNC-machined aluminum chassis delivering rigidity, durability, and a lightweight profile for field use.
• Compatibility: Designed to fit HPA MTW Milspec, Forged, Billet, and MTW-9 series; accepts M4 nozzle length and works with most aftermarket soft and hard buckings without FPS loss.
• Fine Hop-up Adjustment: Aluminum Rotary Dial Knob for micro-adjustments plus a precise Hopup Lever to ensure consistent BB seating and shot consistency.
• Bucking Options: Supports R-Hop and Standard-Hop configurations; includes 4mm bucking nubs with 6mm bucking nubs available as an option.
• Inlet Adaptor & Centering: Interchangeable OD11mm inlet adaptor centers the hop-up unit in the 11mm inner bore nozzle outlet; OD11.5mm and OD12mm adaptors are optional for different setups.
• Retention & Alignment: Removable CNC Brass Side Wings slide smoothly into outer barrel slots; CNC Delrin Locking C-Clip keeps the inner barrel tight, minimizing wobble and twist.
• What’s Included: Comprehensive kit with 1 x Hopup Chamber M4W, 2 x Acrylic Side Covers, 2 x Brass Side Wings, 1 x Steel Pivot Pin, 1 x Rotary Dial Knob, 1 x Soft Round Nub, 1 x Soft Flat Nub (4mm), 1 x Hard Concave Nub (4mm), 3 x Steel Nub Springs, 1 x Spring Guide, 1 x Upper Compression Spring, 1 x Center Compression Spring, 1 x Delrin Locking Clip, 1 x Brass Barrel Spacer, 1 x Brass Spacer Holder O-ring, 1 x Inlet Adaptor (OD11mm).

This hop-up chamber is designed to preserve consistent performance across different buckings and nozzle lengths, helping you achieve stable FPS and reliable BB feeding. The centered, wobble-free installation plus easy micro-adjustments make it a practical upgrade for dedicated MTW builders who demand repeatable results in both field and range settings.