Ed Brown Products Perfection Sear 1911 Blue. Recommended as a perfect fit with our Hammer #896 and #897 for the best trigger pull possible with the least amount of hand labor no jigs necessary. Hammer contact angle already prepped ready for your favorite clearance angle. Specs: 4340 tool steel heat treated to 50 Rc. Specifications for Ed Brown Products 1911 Perfection Sear: Manufacturer: Ed Brown Products Color: Blue Fabric/Material: Tool Steel Gun Model: 1911 Package Contents: Ed Brown Products 1911 Perfection Sear What firearm models does the manufacturer say Ed Brown Products 1911 Perfection Sear is compatible with? The manufacturer suggests that Ed Brown Products 1911 Perfection Sear is compatible with 1911Ed Brown Products 874: Perfection Sear 1911 Blue