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- Browse By Series > 300AAC (Special Ops Series) > Upper Receiver Kit
- RESTRICTED STATES > California > AR-300 (300 AAC Blackout) Special Ops Series > Upper Receiver Kit
- RESTRICTED STATES > California > AR-47 (7.62x39) Wolverine Series > Upper Receiver Kit
- RESTRICTED STATES > California > AR-458 (458 SOCOM) Knockout Series > Upper Receiver Kit
- RESTRICTED STATES > Colorado > AR-15 (.223/5.56) Operator Series > Upper Receiver Kit
- RESTRICTED STATES > Colorado > AR-224 (224 VALKYRIE) Sniper Series > Upper Receiver Kit
- RESTRICTED STATES > Colorado > AR-300 (300 AAC Blackout) Special Ops Series > Upper Receiver Kit
- RESTRICTED STATES > Colorado > AR-6 (6.5 Grendel) Recon Series > Upper Receiver Kit
- RESTRICTED STATES > Colorado > AR-458 (458 SOCOM) Knockout Series > Upper Receiver Kit
- RESTRICTED STATES > Connecticut > AR-224 (224 VALKYRIE) Sniper Series > Upper Receiver Kit
- RESTRICTED STATES > Connecticut > AR-9 (9MM) Stinger Series > Upper Receiver Kit
- RESTRICTED STATES > Connecticut > AR-15 (350 Legend) Hunter Series > Upper Receiver Kit
- RESTRICTED STATES > Illinois > AR-6 (6.5 Grendel) Recon Series > Upper Receiver Kit
- RESTRICTED STATES > Maryland > AR-9 (9MM) Stinger Series > Upper Receiver Kit
- RESTRICTED STATES > Maryland > AR-10 (.308 WIN) Punisher Series > Upper Receiver Kit