This is a Radical Firearms AR Upper: Complete known as the CFU chambered in 300 AAC Blackout, model # RF00358, UPC 816903024094
Model Series: CFU
Gun Type: AR Upper: Complete
Caliber: 300 AAC Blackout
Action: Semi-Automatic
Finish: Black
Barrel Length: 10.5
Features: Complete Upper/ Free Float RPR Handguard