The Geissele Automatics Super 42 Buffer Spring H1 is a high-performance upgrade designed to enhance the reliability and functionality of your AR-15 rifle. Inspired by the German MG42 machine gun its innovative design features three independent wire strands that act as harmonic dampers and energy absorbers. This unique construction reduces the risk of spring failure by allowing the wires to flex individually effectively displacing excess energy. Made from durable steel the Super 42 Buffer Spring ensures long-lasting performance and improved dependability for your firearm.