Our Barrel Links are fully machined from 416 stainless bar stock and hardened for maximum durability. We offer five link sizes with the #142R3 link being the stock equivalent, then two oversize and two undersize links. Custom Barrel Links are available individually or you can purchase our link kit which has five links, one of each size. When installing a custom barrel you need top-quality custom links, Wilson Combat¨ custom barrel links. Barrel Link, #3, .278".