The FN AR-15 Button Rifled Barrel is an Accessory-Barrel for 223 Rem | 5.56 NATO calibers with a 14.7" M4 Car Carbine length gas system. It features a manganese phosphate finish, chrome lined chamber and bore, and M4 style feed ramps.
Specs
| Model No. | FN20-100044 |
| Model | AR-15 Button Rifled Barrel |
| Manufacturer | FN |
| Color | Manganese Phosphate Finish |
| Caliber | 223 Rem | 5.56 NATO |
| Barrel Length | 14.7 |
| Weight | 1.9 |
