WYSHTECH Airsoft does a comprehensive technical overhaul of a Cyma M14 EBR airsoft rifle, transforming it from a mediocre out-of-the-box performer into a refined marksman tool. He begins by establishing a baseline, noting that the stock internals struggle with heavy ammunition efficiency. To fix this, he performs some mechanical surgery, including 3D-printing a custom jig to enlarge the gearbox holes for high-end bearings, ensuring the gears spin with the grace of a figure skater rather than a blender full of rocks.

The upgrade process involves a carefully selected menu of parts, including a high-torque motor, a specialized electronic trigger unit, and a silent piston head designed to keep the rifle's operation quiet. Along the way, the host encounters several quirks unique to the EBR model, such as proprietary motor cages and gear sets that differ from standard M14s. He navigates these technical hurdles with patience, even though the sheer number of screws and tiny components required to reach the gearbox would make a watchmaker sweat.

After the reassembly, the rifle undergoes testing to verify the improvements in consistency and power. The results show a significant jump in performance, featuring a snappy trigger response and remarkably stable energy output.