The Fortis Manufacturing, Inc. Billet M4 Upper is a precision machined stripped upper designed for an AR15, made from Billet 7075 T6 aluminum, which fits the 223 Remington or 556NATO. The design carefully balances lightweight function and aesthetic appeal without sacrificing rigidity or strength, in a sleek black color.
Specs
| Model No. | FORTU-BILLET-M4 |
| Manufacturer | Fortis Manufacturing, Inc. |
| Color | Black |
| Caliber | 223 Remington |
