The FN AR-15 Button Rifled Barrel is a 5.56mm, 16" M16 Mid-Length Gas System accessory-barrel with a manganese phosphate finish. Additionally, it features a chrome lined chamber and bore, along with M4 style feed ramps.
Specs
| Model No. | FN20-100041 |
| Model | AR-15 Button Rifled Barrel |
| Manufacturer | FN |
| Color | Manganese Phosphate Finish |
| Caliber | 223 Rem | 5.56 NATO |
| Barrel Length | 16 |
| Weight | 2.0 |
