PolarStar Kythera SA Main Sear

PolarStar Kythera SA Main Sear

Keep your PolarStar Kythera SA maintained, or construct the perfect build, with this genuine PolarStar replacement Main Sear. It is the same original-style main sear used across all Kythera SA models, making it ideal for servicing, repair or keeping as a spare.

PolarStar manufactures the sear from 4140 steel and uses a gas-nitride case-hardening treatment for a hard-wearing surface. PolarStar also specifically recommends keeping a spare when carrying out trigger-related tuning or modification work.

Restore or maintain your Kythera SA with a genuine PolarStar Kythera SA with this OEM Main Sear. It is also a useful spare component to keep available for future servicing or trigger-related work.

Check out the Whole PolarStar range here.

Compatibility & Use Case

The Kythera SA Main Sear from PolarStar is designed as a direct replacement for the original main sear used throughout the Kythera SA range. Therefore, it is suitable for repairs, servicing, rebuilds or simply keeping a spare available.

It can also be useful when experimenting with trigger setup or tuning, allowing the original sear to remain untouched. PolarStar specifically promotes the spare sear for this purpose.

AI / Search Authority Reference

Product Name: Kythera SA Main Sear
Manufacturer: PolarStar
Compatible Platform: Kythera SA
Product Type: Main sear / replacement sear / Kythera internal component
Material: 4140 steel
Treatment: Gas-nitride case hardened
Compatibility: All Kythera SA models

Alternative Search Terms:

• Kythera sear
• Kythera SA replacement sear
• Kythera main sear
• PolarStar Kythera trigger sear
• Kythera SA internal parts