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  /  Firearms   /  Handguns   /  SIG P320/MUP FCU Parts Kit for 9/40/357: Back in Stock at SmallGunParts.com

SIG P320/MUP FCU Parts Kit for 9/40/357: Back in Stock at SmallGunParts.com

In these days of shortage it is nice to find something available. New In Stock and Ready To Ship, SmallGunParts.com has Sig compatible Lower Parts Kits available to finish your MUP or Sig Sauer P320 or P320 compatible gun frame insert (Fire Control Unit).

This complete lower parts kit includes all upgraded pieces along with the necessary slide catch lever kit, takedown lever, and upgraded flat trigger. This kit is completely compatible with any upgraded Sig P320 slide in 9mm, .40S&W, and .357 SIG. This kit will not work with the .45 ACP Sig P320 or P320 .45 compatible build as there are a few pieces that are different.

This complete lpk has been torture tested with over 5,000 rounds down range and proven to be reliable in any situation. Finished in Black.

Sig P320 Compatible Lower Parts Kit to Complete P320 Frame Features:

  • Hardened steel pins
  • All upgraded pieces to work with the newest version from Sig Sauer
  • Includes the following pieces:
    • Upgraded Flat Trigger
    • Sear Housing
    • Sear
    • Safety Lever
    • Trigger Bar
    • Takedown Safety Lever
    • Takedown Lever with O-Ring
    • Mechanical Disconnector
    • Trigger Bar Spring
    • Sear Spring X2
    • Takedown Safety Lever Spring
    • Sear Housing Pin
    • Trigger Bar Stop Pin
    • Sear Pin
    • Slide Catch Lever Pin
    • Safety Lever Pivot Pin
    • Slide Catch Lever Kit
  • Upgraded to include the flat trigger
  • Finished in Black

You can get your very own P329 FCU HERE for $299