Set of nylon shims for piston position adjustment (AOE) – 5pcs in packing

<p>A set of 5 nylon washers for AOE tuning. The angle of engagement (between the piston and piston gear teeth) is important for the reliability of the weapon.</p>
<p>The washers must be placed between the piston and the piston head. The thickness is about 0.95 mm.</p>