Description
Andro Corp Ind. / ACI 10.3″ 5.56 NATO M4 Upper Receiver – BLK | A2 |M4 Hand Guard | Without BCG & CH
With a 10.3-inch barrel made of Chrome Moly Vanadium and a twist rate of 1-7, the 5.56 NATO AR-15 Upper from Andro Corp Industries offers dependable performance. It comes fitted with a sleek M-LOK hand guard, allowing for easy customization with your favorite accessories. Constructed from Mil-Spec 7075 T6 aluminum and featuring T-marks, the upper is also dry film lubricated to ward off corrosion. Its use of Mil-Spec components makes it a trustworthy choice.
| Barrel | Specifications |
|---|---|
| Caliber | 5.56 |
| Length | 10.3″ |
| Material | 4150 Chrome Moly Vanadium |
| Profile | M4 |
| Finish | QPQ Corrosion Resistant |
| Gas System Length | Carbine |
| Gas Block Journal | .750″ |
| Dimpled? | No |
| Twist Rate | 1:7 |
| Muzzle Thread | 1/2×28 TPI |
| Weight | 18oz |
| Barrel Extension | M4 Feed Ramps |
| Target Crown | 11 Degree |
