MechLabs XX-Mod HPA Engine

XX-Mold Bolt

The XX-Mold Bolt is engineered specifically for the XX-Mod HPA engine, yet remains fully cross-tech compatible with the NEXXUS and ARC platforms — allowing existing users to benefit from the same advancements in air performance and efficiency.

Air Performance Enhancements:

1. Reduced Air Consumption – Improved efficiency provides more shots per tank while maintaining consistent output.

2. Optimized Burst Management – Lower air-volume demand during rapid fire makes the XX-Mod more stable and compatible with lower-flow third-party regulators and tank presets.

3. Adjustable Nozzle System – The nozzle can be precisely adjusted to fit perfectly within the hop-up chamber, improving grouping and output stability. At the same time, it synchronizes the internal air-cycle rate to deliver the optimal air volume for different nozzle lengths and configurations.

4. Minimized Shot-Down Effect – Delivers smoother transitions between semi and full-auto fire, reducing FPS drop and maintaining accuracy across bursts.

Air Bender Function

The Air Bender system is designed to fine-tune the internal air-cycle rate, giving users precise control over the Rate of Fire (ROF) and overall system dynamics. By optimizing airflow timing, it reduces service-air demand and enhances air efficiency per shot — extending your overall playtime without sacrificing consistency.

Adjustment Notice:
As a mechanically adjustable system, extreme settings can affect overall performance and may lead to irregular cycling. For best results, make small, incremental adjustments until the optimal balance between responsiveness and stability is achieved.

Main Features

• Drop-In Installation – Directly replaces your standard AEG gearbox with zero hassle.

• CNC-Milled Aluminium Series 6 Construction – Lightweight, strong, and engineered for precision and durability.

• Modular Block Design – Easy and intuitive component swapping for multiple configurations.

• Precision Lock-Fit Interface – Guarantees alignment accuracy and consistent assembly.

• 3-Axis XYZ Alignment System – Adapts to all receiver types for perfect internal fit.

• Fully Mechanical, Zero Electronics – 100 % waterproof; operational even underwater.

• Magnetic Return Trigger – Adjustable travel and sensitivity for crisp, responsive control.

• XX-Mold Bolt System – Adjustable nozzle for optimized chamber fit and air-cycle synchronization.

• Air Bender Control – Adjustable bolt-cycle rate and ROF tuning for custom performance.

• Optimized Air Efficiency – Reduced consumption and stabilized output for longer playtime.

• Flo MAX TS Compatibility – Supports dual-air supply configurations for advanced setups.

• 9 Anodized Color Options – Available in 9 premium finishes to match your personal style.