PolarStar Gearbox Shim Set – Cylinder Conversion
$4.90
Thickness
HPA Specialists Since 2022
Description
PolarStar Gearbox Shim Sets for cylinder conversion kits. Used to properly fit the cylinder within the gearbox shell. Available in two thicknesses — select based on your gearbox shell dimensions.
- .152" — standard thickness
- .157" — slightly thicker for tighter gearbox shells
Parts and accessories ship within 7 business days. Custom HPA rifle builds take up to 45 business days (often less). Need it sooner? Contact us to check current stock.
All sales on parts and accessories are final once shipped. Defective or damaged items are covered under the KA Tech Warranty.