The Sig Armorer P239 SuperStrut Mainspring System
$65.00
You can now add our Superstrut to your Sig Sauer P239 pistol.
Guaranteed to lighten and smooth your double action pull!
The Sig Armorer SuperStrut:
- 4140 Steel
- EDM Wire Cut
- Precision Hand Polishing
- Nickel Boron Nitride Coating
The SuperStrut Mainspring System fixes:
- Mainspring Offset (no more bent mainsprings!)
- Mainspring Fatigue
- Mainspring Gouging
This SuperStrut fits the following Sig Pistol Models:
- P239
The Sig Armorer P239 SuperStrut Mainspring System includes the Superstrut, ground and polished 20lb Wolff Spring, and new style high impact plastic 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.
In stock