The FN AR-15 Button Rifled Barrel is a 5.56mm 10.5" carbine length gas system accessory-barrel with a manganese phosphate finish. It features a chrome lined chamber and bore, M4 style feed ramps, and is designed for 223 Rem | 5.56 NATO calibers.
Specs
| Model No. | FN20-100037 |
| Model | AR-15 Button Rifled Barrel |
| Manufacturer | FN |
| Color | Manganese Phosphate Finish |
| Caliber | 223 Rem | 5.56 NATO |
| Barrel Length | 10.5 |
| Weight | 1.45 |
