Ruger AR-556 modern sporting rifle lower receiver is CNC-machined from forged 7075-T6 aluminum, is Type III hard-coat anodized and makes a great lower for those looking to build their own modern sporting rifle.
<p>Ruger AR 556 Lower 223 Specs Forged AR Lower .223 Rem 5.56 NATO Black Finish Ruger AR-556 Stripped Lower Receiver American-made</p>
