Metal Shim Set
20 piece metal shim set for JM gel blasters as well as many others.
Used for running your gears smoother by reducing movement and noise within the gearbox.
Each set includes 4 different shim sizes:
- 5 x 0.1mm
- 5 x 0.2mm
- 5 x 0.3mm
- 5 x 0.5mm
Please ensure this product suits your blaster before purchase.