Anchor Armament LLC ANCHOR ARMAMENT LLC POF-USA, PATRIOT ORDNANCE FACTORY P-308 (Semi-Auto) Stripped Lower NP3 Finish Stripped, semi-auto lower receiver is fully machined from U.S.-sourced 7075 T6 aluminum billet for superb strength and precise dimensions. Extra metal in the right places gives a big payoff in added support and rigidity with minimal extra weight. AR-style .308 accepts mil-spec and aftermarket accessories, so you can select the upper receiver, receiver extension, trigger group, pistol grip, and buttstock that best serve your needs -- the perfect foundation for a custom tactical rifle. Integral, oversized triggerguard, machined as part of the receiver, further enhances structural rigidity and provides plenty of clearance for trigger finger when wearing gloves. Radiused inside and outside edges protect finger from cuts and scrapes when mounting weapon quickly or during extended fire. Flared magwell with smoothly radiused inside corners helps ensure fast reloads, without fumbling, when seconds count. Cut for ambidextrous bolt release to allow strong- or weak-hand operation; right-side button included with receiver. Easy-to-see laser etched, international “fire” and “safe” symbols give the operator instant, intuitive feedback on the weapon’s safety status in high-stress situations. Mil-spec hardcoat anodized for additional surface strength and corrosion resistance before application of the hard, self-lubricating Teflon® outer coating that’s almost impervious to abrasion and scratches. All heat-treatment, plating, and coatings are applied by U.S.-owned and operated contractors. SPECS: 7075 T6 aluminum, hardcoat anodized. Small-pin, .154” (3.9mm) hammer/trigger pin holes. .250” (6.3mm) pivot/takedown holes. Accepts AR-style .308/7.62mm upper receivers from Patriot Ordnance, DPMS, and Remington Arms. Uses standard small-pin AR-15 trigger, pistol grip, takedown pin, and receiver extension. Requires .308 buffer, buffer spring, pivot pin. Matte medium gray finish. FFL required for purchase. Only Ground shipping options available. No USPS shipping on this item.