MAXX CNC Aluminium Hop-Up Chamber – M4P Pro

Upgrade your rifle’s accuracy and consistency with the MAXX CNC Aluminium Hop-Up Chamber M4P Pro. Machined from billet aluminium to tight tolerances, this chamber delivers solid alignment, improved air seal and reliable performance across prolonged use — ideal for precision-focused AEG and MTW-style builds.

Key Features

• Precision CNC Machining: Billet aluminium construction for repeatable tolerances and rock-steady barrel alignment.
• Enhanced Air Seal: Optimised sealing surfaces reduce air loss for more consistent FPS and tighter shot groups.
• Compatible Geometry: Designed to fit standard M4/M16 feed paths and common rotary hop units for broad compatibility.
• Easy Tuning Access: Smooth, positive adjustment for the hop unit allows quick on-gun tuning without excess play.
• Durable Finish: Hard-anodised surface resists wear and provides long service life in demanding environments.
• Tool-Friendly Fitment: Precise bolt patterns and locating features make installation straightforward and repeatable.

Specifications

• Material: 6061 / 7075 billet aluminium (hard-anodised)
• Compatibility: M4/M16 style feed geometry and rotary hop units (check chamber model for exact fitment)
• Finish: Hard anodised, matte black
• Weight: Light but rigid — designed to add minimal mass while improving stability
• Mounting: Standard M4 piston/gearbox interface (fits common AEG housings and MTW-spec receivers)

Why Choose the M4P Pro Chamber?

• Precision CNC build quality improves barrel alignment and reduces shot dispersion.
• Stronger air seal translates to more consistent muzzle energy and better grouping.
• Robust aluminium construction stands up to repeated disassembly and high-stress builds.
• Works well as the foundation for further accuracy upgrades like tightbore barrels and premium buckings.

Installation & Tuning Advice

• Ensure the gearbox/receiver and hop unit are clean before installation to prevent trapped debris affecting the seal.
• Use light silicone grease on O-rings where recommended; avoid excess lubricant that can attract dust.
• Fit the inner barrel and stabiliser correctly to prevent lateral movement — proper alignment is key to performance.
• Start with a moderate hop setting and test with your chosen BB weight to fine-tune for range and accuracy.

What’s Included

• MAXX CNC Aluminium Hop-Up Chamber – M4P Pro
• Barrel stabiliser / locating ring (where applicable)
• Spare O-rings and basic seal kit
• Fitting instructions and tuning tips

Refine Your Accuracy

The MAXX M4P Pro hop-up chamber is a straightforward, high-impact upgrade for players focused on precision. Replace your stock chamber with this CNC unit to tighten groups, improve consistency and create a more reliable platform for further performance mods.

Add the MAXX CNC Aluminium Hop-Up Chamber M4P Pro to your cart today and tighten up your groups on the field.