AMERICAN RESISTANCE AR15 TAKEDOWN UPPER WITH CRY HAVOC TACTICAL QRB SYSTEM 556/223 AND 13″ MLOK HANDGUARD. by Michael Souza | Nov 29, 2022 AMERICAN RESISTANCE AR15 TAKEDOWN UPPER WITH CRY HAVOC TACTICAL QRB SYSTEM 556/223 AND 13″ MLOK HANDGUARD.