TacFire AR-15 7.62x39 Unassembled Upper Receiver Kit - 5"

CMMG Banshee Suppressed 9mm Upper Receiver Kit, 6.5"

Tacfire Build Kit for AR-15 45 ACP Complete Rifle, Nitride Black - SSRK45ACPLPK

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TacFire AR-15 .223 / 5.56 Unassembled Upper Receiver Kit - 10"

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TacFire AR-15 9mm Unassembled Upper Receiver Kit - 16"

TacFire AR-15 9mm Unassembled Upper Receiver Kit - 10"