Shield Arms SA-15 Stripped Lower Receiver - 5.56mm/300 Blk Non-Folding 7075-T6 Billet Black

Features Machined from 7075-T6 aircraft grade billet aluminum Mil-Spec dimensions Accepts standard AR-15 magazines Matte black hard-coat anodized per Mil 8625 Type 3 Class 2 Precision machined magazine well with beveled feed lip for easy mag changes Caliber marking of “MULTI” Compatible with most standard AR-15 components and most aftermarket parts Upper tension screw behind grip screw (threaded hole with hardware included) to adjust any “slop” out of vertical fit between upper and lower