LANTAC USC Side Charging Upper Receiver Stripped AR-15 Billet Aluminum Matte

The patent pending SMOOTHCAM system features a domed head, low friction cam pin and special upper receiver that offer ultra smooth operation. With its blended cam recess the USC upper is machined from Billet 7075-T6 certified aluminum and milspec, Type3, Class2, Deep Black, Hardcoat Anodized. The USC is a precision machined upper with an ultra smooth proprietary bore, with a roughness average in micro inches of 16, as opposed to standard bored or milled uppers that are 32-63, or higher.