Complete AR-15 upper kit 100% US made

Upper has an extruded 6160 aircraft aluminum upper with a larger internal bore to fit bigger muzzle devices without additional tools, Dry film lube anodized. 16.25” pencil profile barrel, 4150V, SS, 1 in 8 twist, Mid length gas. 1-4x30mm vortex viper SFP with Parallax removed, and lower 1/3 co-witness mount. 1/3 co-witness sight set. <br>$480 OBO<br>1396162864_1.png