The Sig Armorer P220 SuperStrut Mainspring System

PLEASE NOTE THIS VERSION IS FOR THE P220 ONLY!
If you have a non-P220 you may be interested in The Sig Armorer SuperStrut for the other P-Series models.

The Sig Armorer P220 SuperStrut:

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

The P220 SuperStrut Mainspring System fixes:

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

The Sig Armorer P220 SuperStrut Mainspring System includes the Superstrut, ground and polished 20lb Wolff Spring, and new style mainspring seat. Do NOT use Superstrut; or the factory E2 Strut for that matter, with an aluminum or any other metal mainspring seat. The seat is designed to be made from plastic as it works as a bearing against the strut. Metal seats WILL be gouged by the strut and over time will create enough friction to reduce mainspring force and make the double-action pull both gritty and heavy.