Watch WYSHTECH Airsoft go over the CYMA REC10 SR25 to make it perform better... "This is one of the most in-depth AEG videos I’ve ever made — a full start-to-finish build and tuning process on the CYMA REC10 (SR25). This project turned into a complete experiment where I tested almost every variable to get this AEG shooting smooth, accurate, and consistent with .40g BBs.

In this long-form breakdown, I cover:

Factory Internals Overview

• What CYMA includes inside the gearbox
• First impressions of stock components

Testing & Experimentation

• Multiple barrel tests
• Lapping and barrel prep
• Tappet timing adjustments
• PME troubleshooting
• Bucking comparisons
• Nozzle fit, compression fixes, and more

Upgrade Process

• Which parts made the biggest difference
• What didn’t matter as much as expected
• Fine-tuning for accuracy and efficiency
• Achieving the joule goal with .40g BBs

Final Performance Results

• RPS, joules, and consistency
• Accuracy improvements
• How smooth the REC10 can actually be
• Whether the platform is worth upgrading

This video shows the entire Wyshtech workflow with clear explanations, real testing, and the trial-and-error that normally gets edited out."