The C&S Tactical 2 stainless steel sear is precision CNC machined from high quality. The stainless steel offers more corrosion resistance over the standard carbon steel parts. The sear is heat treated to a Rockwell C hardness of 55-58 for long term durability. The Carbon Steel sear is manufactured from a die steel alloy, this sear has been heat treated to a Rockwell hardness of 46-48 and designed for trigger pulls of 4 lbs and greater. Suitable for all applications but expressly designed for the tactical handgun. Cylinder & Slide parts carry a manufactures lifetime warranty against breakage to the original purchaser on un-modified parts.