AMT strives to offer the highest quality 80% lower receivers at the best prices on the market. The anodized, forged 80 lowers have an sccuracy to within one thousandth of an inch (+/- 0.001), are hard-coated anodized black. Of course, they’re 100% mil-spec. Also feature a broached magwell and come in 1, 3, 5, or 10 packs with optional jig kits. Let’s Keep America Working!