ASCU-2 Pro Mark II

The Evolution of Precision – 16 Years of Airsoft Electronics Expertise

With over 200,000 units field-proven worldwide from Airsoft Systems the ASCU-2 Pro Mark II represents the latest generation of advanced Electronic Trigger Units (ETUs) from the pioneers of airsoft control systems. Designed specifically for Version 2 gearboxes, it delivers unmatched reliability, realism, and performance refined through more than a decade of innovation.

Realism-Oriented Design Philosophy

• Real firearms don’t rely on Bluetooth apps or ROF sliders — and neither does the ASCU.
• The ASCU-2 Pro Mark II faithfully replicates real firearm behaviour, including authentic trigger response, cycle timing, and selector functionality.
• Ensures full-cycle completion for true semi/full-auto realism with precise cutoff detection — ideal for MilSim and realism-focused players.
• Mechanical switches outperform optical sensors, maintaining dependable operation even in grease-filled gearboxes where contamination can disrupt optical systems.
• No apps, no gimmicks — enjoy fast, intuitive, and field-ready control directly through your trigger and fire selector.

Core, Field-Proven Features

• Reliable Semi, Full-Auto, and Burst Fire Modes
• Programmable Trigger Modes for tactical flexibility
• Self-Adjusting Pre-Cocking for instant trigger response
• Precision Active Braking for improved control and component longevity
• Accurate Gearbox Cycle Management ensuring perfect shot consistency
• Ultra-Fast Short Circuit Protection – keeps your ASCU and motor safe
• Universal Battery Over-drain Protection for extended battery health
• Supports up to 15V input / 240A burst load
• Optimized for Brushless Motors, yet fully compatible with classic AEG motors