Product Description Replacement recoil springs for 1911 pistols. Constructed of chrome silicon alloy. ISMI 1911 Govenrment Recoil Spring 12-1/2 lb Chrome Silicon at MidwayUSA Browse all MidwayUSA deals $5.99 In Stock at MidwayUSA Price verified today Buy Now at MidwayUSA Secure checkout Easy returns or compare prices Amazon eBay Product Details Category Recoil Parts Brand Ismi MPN 1911-12.5 Ismi