Grid Defense Complete Upper Receiver 9mm 9x19 Para 16 inch 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark Earth. Grid Defense machined these AR15 Upper Receivers from 7075-T6 aluminum for a lightweight yet durable...
Grid Defense Complete Upper Receiver 9mm 9x19 Para 16 inch 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark Earth. Grid Defense machined these AR15 Upper Receivers from 7075-T6 aluminum for a lightweight yet durable...