Matrix Ultra Precision Gun Smith Airsoft AEG Gearbox Shim Set (.1mm / .2mm)

Proper shimming is one of the most critical—and often overlooked—steps in building a smooth, reliable, and long-lasting airsoft AEG. The Matrix Ultra Precision Gun Smith Airsoft Gearbox Shim Set is purpose-built for technicians and enthusiasts who want precise control, reduced gearbox noise, and optimal gear alignment without unnecessary clutter or guesswork.

Designed by experienced airsoft technicians, this shim set includes only the most useful and commonly required thicknesses for modern AEG builds: 0.1mm and 0.2mm. By eliminating thicker, rarely used shims, Matrix ensures maximum tuning freedom while reducing wasted parts and setup time. Whether you’re correcting gear height, adjusting motor engagement, or dialing in a high-speed or high-torque build, this kit gives you exactly what you need—nothing more, nothing less.

Precision Where It Matters Most

Unlike generic shim kits that include inconsistent sizes and questionable tolerances, the Matrix Ultra Precision Shim Set is manufactured with optimized diameter and precision thickness for consistent results. Each shim is made from a durable zinc alloy / metal blend, offering excellent wear resistance under repeated stress and high-RPM operation.

The ultra-thin 0.1mm and 0.2mm shims allow for fine micro-adjustments that are essential for today’s tighter-tolerance gearsets. This makes the set ideal for everything from standard field AEGs to advanced builds running high-torque motors, upgraded gear ratios, or electronic trigger units.

Designed for All AEG Gearboxes

This shim kit is universally compatible with most major airsoft brands, including standard Version 2, Version 3, and other common AEG gearbox designs. Whether you’re working on an M4, AK, G36, MP5, or custom platform, the optimized diameter ensures proper fitment without binding or interference.

Thanks to the carefully selected thickness range, this set is also suitable for other precision shimming applications, such as motor height tuning or correcting axial play in aftermarket gearsets.

Cleaner Builds, Quieter Gearboxes, Longer Lifespan

Correct shimming reduces friction, minimizes wear, and helps distribute load evenly across your gearbox. With the Matrix Ultra Precision Shim Set, you can expect:

• Smoother gear rotation

• Reduced gearbox noise and vibration

• Improved efficiency and consistency

• Extended lifespan of gears, bushings, and bearings

This makes the kit an excellent choice not only for upgrades, but also for preventative maintenance on stock gearboxes.

Trusted Matrix Quality & Evike Distribution

Matrix AEG upgrade parts are known for high quality control and direct-fitment design, making them a trusted choice among airsoft technicians worldwide. Distributed exclusively by Evike.com, Matrix products benefit from industry-leading warranty coverage and after-sales support, giving you confidence in both performance and reliability.

Package Includes

• 20 × 0.1mm precision shims

• 20 × 0.2mm precision shims

Product Specifications

• Compatibility: Standard Airsoft AEG Gearboxes

• Material: Optimized zinc alloy / metal

• Shim Thickness: 0.1mm & 0.2mm

• Manufacturer: Matrix Tactical Systems