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

The Sig Armorer SuperStrut Mainspring System includes our ground and polish 20lb Wolff Spring.

Please note if your pistol was made before 2011, you may need the SuperStrut compatible Mainspring Seat. Check your factory box for the manufacturing date.Struts are currently on backorder for online sales but in stock for our in-house custom work until our stock numbers are replenished.

In stock (can be backordered)