Description PSA AR-15 M4 Stripped Lower Palmetto State Armory is proud to provide the PSA AR-15 M4 Stripped Lower Receiver. Just the thing for that special classic build. These limited-edition lowers are made using the most advanced aerospace manufacturing technology to produce the industries finest, forged Mil-Spec lowers. Our receivers are machined on a multimillion-dollar, automated, manufacturing system that enables us to produce a product of unequaled quality and value. These forged lowers are quality made using material is 7075-T6 and are marked “CAL. 5.56MM.” to accommodate most builds. The finish is black hard coat anodizing per Mil-8625 Type 3 class 2. Material: Made from 7075-T6 Aluminum Finish: Black, Hardcoat Anodized Caliber: Multi Fire Selector: “SAFE” (Safe), “SEMI” (Fire), “BURST” (Full-Auto)
