The Ismi 19 LB. S/S SPRING, EACH is a precision-engineered 1911 main spring designed for Government-model pistols, delivering dependable power to the handgun action with consistent firing pin pressure and reliable cycling. Crafted from high-quality stainless steel, this Ismi main spring resists wear and fatigue, promoting smooth trigger feel and dependable hammer strike across extended use. Specifically compatible with 1911 Government frames, this part integrates seamlessly into standard 1911 actions to enhance reliability in everyday practice or competition, making it a trusted upgrade for handgun enthusiasts and professional shooters alike. The 19-pound rating offers a balanced balance between ignition reliability and functional reset, helping ensure consistent chambering and consistent shot-to-shot performance without adding unnecessary strain on the sear or hammer. Whether you're rebuilding a vintage 1911 or outfitting a modern handgun for range days, this main spring supports repeatable ignition timing and solid follow-up shots. Ismis attention to material integrity and fitment translates to a durable replacement that preserves original ergonomics while contributing to the handguns overall action quality, making it a practical choice for hands-on maintenance and reliable field testing.