PSA 16" Mid-length 5.56 NATO 1:7 Nitride Freedom Upper - with BCG and CH - 507281

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Battle Arms Development Workhorse AR-15 Upper 16 Barrel 5.56 NATO 15 M-LOK Handguard

CMMG Resolute Mk4 AR-15 Complete Upper Receiver 350 Legend 16.1" Barrel

Daniel Defense DDM4v7 AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

Daniel Defense DDM4v7 Lightweight AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

Daniel Defense DDM4v7 S AR-15 Complete Upper Receiver 5.56x45mm NATO 11.5" Barrel

Spike s Tactical 16-inch AR-15 Complete Upper 5.56 NATO M4 LE with 9-inch Rail