Attributes:
- CALIBER/GAUGE: 5.56 NATO
- DETAILED DESCRIPTION: SOLGW M4L89UPPER13.7556XL L89 UPPER 556 13.7 V2
- MANUFACTURER: Sons Of Liberty Gun Works
- MANUFACTURER ITEM #: M4L89UPPER13.7556XL
- MODEL: L89
- SERIES: Upper Receiver
- UPC: 644625068115
