Product Description These replacement parts are factory originals from Sig Sauer. Using factory replacement parts guarantees excellent fit and reliable operation. Sig Sauer P220, P226, P228, P229 Mainspring Seat Small Grip at MidwayUSA Browse all MidwayUSA deals $13.29 In Stock at MidwayUSA Price checked 12 days ago Buy Now at MidwayUSA Secure checkout Easy returns or compare prices Amazon eBay Product Details Category Handgun Frames Brand Sig Sauer MPN MAINSPRING-SEAT-2 Sig Sauer