The Sig Armorer SuperStrut Mainspring System


The Sig Armorer SuperStrut:

  • 4140 Steel
  • EDM Wire Cut
  • Precision Hand Polishing
  • Nickel Boron Nitride Coating

The SuperStrut Mainspring System fixes:

  • Safety Crossbolt Impact
  • Mainspring Offset (no more bent mainsprings!)
  • Mainspring Fatigue
  • Mainspring Gouging

If your pistol was made before 2011, you may need the SuperStrut compatible Mainspring Seat. Check your factory box for the manufacturing date.

In stock

SKU: TSA-SS-MSS Categories: ,