Evolution Gun Works (EGW) is renowned for its meticulous craftsmanship, employing advanced CNC machinery to manufacture high-quality barrel links in the USA. Each component undergoes a thorough machining process, including spotting, drilling, reaming, chamfering and engraving, to ensure precision and durability. Made from heat treated 4140 chromoly steel, these barrel links are designed for strength and resilience. After machining, they are expertly blued to enhance corrosion resistance and provide a sleek, professional finish. EGW components exemplify superior engineering and American manufacturing excellence. 0.273 inches center-to-center