The Battle Arms Development WORKHORSE Upper Receiver Assembly is designed for a 223 Remington/556NATO caliber with a 16" barrel and a mid-length gas system. It features an anodized black finish, an A2 flash hider, and a WORKHORSE 15 M-LOK free float handguard, but does not include a bolt carrier group or charging handle.
Specs
| Model No. | BAD-WH-UR-16-556 |
| Model | WORKHORSE |
| Manufacturer | Battle Arms Development |
| Color | Black |
| Caliber | 223 Remington |
| Barrel Length | 16 |
