AR15 Enhanced Lower Receiver Parts Kit | Geissele S3G Trigger

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Our Enhanced Lower Receiver Parts Kit includes a Geissele Super 3 Gun (S3G) Trigger and all the parts you need to assemble a lower receiver into a lower half except for the buttstock assembly and pistol grip.


This LPK includes:

  • Geissele Super 3 Gun (S3G) Trigger Group
  • Enhanced Trigger Guard
  • Bolt Catch
  • Bolt Catch Plunger
  • Bolt Catch Roll Pin
  • Bolt Catch Spring
  • Buffer Retainer
  • Buffer Retainer Spring
  • Magazine Catch
  • Magazine Catch Spring
  • Magazine Release Button
  • Pivot Pin
  • 2x Pivot/Takedown detents
  • 2x Pivot/Takedown detent springs
  • Safety Detent
  • Safety Detent Spring
  • Semi-auto safety selector
  • Takedown pin
  • Trigger Guard Roll Pin

SKU: STAG500036


Q: Do you have instructions or a video on how to install the kit?

A: We strongly recommend having a gunsmith install the lower parts kit to prevent damage during installation. Unfortunately we do not have instructions or a video on how to install the kit.

Q: Does Stag Arms use large pin or small pin?

A: We use the industry standard small pin. The trigger and hammer pins are .154" and the takedown and pivot pins are .250".


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