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Aero Precision M4E1 Threaded 18" 6.5 Grendel Complete Upper Receiver with 15" ATLAS R-ONE Handguard - Anodized
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Wolf Performance Arms 6.5 Grendel 16" Complete Upper Receiver
Radical Firearms Complete Upper 20" Medium Profile 6.5 Grendel with 15" RPR - CFU20-6.5-SS-MED-15RPR
Anderson B2K612DF000P Complete Upper 16" 6.5 GrendelDEL
Anderson B2K612DF000P Complete Upper 6.5 Grendel 16"
Aero Precision M4E1 Enhanced 20" 6.5 Grendel Complete Upper Receiver - APAR640232M53
Alexander Arms UTA65 Tactical Complete Upper 6.5 Grendel 16" Black Cerakote Aluminum Receiver M-LOK Handguard for A
Alexander Arms UHU65BL Hunter Complete Upper 6.5 Grendel 18" Black Aluminum Cerakote Receiver M-LOK Handguard for A