Revenant Arms Aluminum Mainspring Seat for Sig Sauer, E2 Grip
This mainspring seat is aluminum, available either unanodized silver, or with an anodized finish, in black, blue, red, or gold. Unlike the original plastic one, it will never break.
Models: P220, P226, P228, P229 (E2 Grip)
Note: Not liking plastic parts, I always wanted to have aluminum mainspring seats in my Sigs. It’s not that the plastic ones don’t work well, because they do for the most part. However, I know of one gentleman reporting on Sig Talk that his plastic one broke after 200 rounds.
Manufacturer: Matrix Precision Arms
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