SANTAN FORGED UPPER RECEIVER ODG

Battle Arms Development WH556-URS-ODG Workhorse Upper Receiver Aluminum OD Green Anodized Receiver for AR15/M4

Geissele Automatics 5.56 USASOC Improved Complete Near-Clone AR-15 Upper Receiver - Desert Dirt- 10.3" - Open Box

Radian Weapons Assembled AR-15 Upper Receiver - 15.5" - Radian Brown

Wraithworks Billet Slick Side AR-15 Upper Receiver - Black | No Forward Assist or Brass Deflector

Precision Defense Forged Stripped AR-15 Upper Receiver

Sons of Liberty Gun Works M4-76 5.56 Barreled Upper Receiver - 13.7"

San Tan Tactical PILLAR Lite Billet Upper Receiver