Attributes:
- BARREL FINISH: Black
- BARREL LENGTH: 16"
- CALIBER/GAUGE: 5.56 NATO
- DETAILED DESCRIPTION: FAXON URSSB556 ARAK 21 16 5.56 CMP UPPER
- MANUFACTURER: Faxon Firearms
- MANUFACTURER ITEM #: URSSB556
- MODEL: ARAK
- RECEIVER FINISH: Black Anodized
- SERIES: Complete Upper
- UPC: 816341021952