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M4E1 Threaded PRO Complete Upper w/ 13.7" 5.56 CHF Mid-Length Barrel and 12.7" ATLAS R-ONE Handguard - Anodized Black

M4E1 Threaded Complete Upper w/ 13.7" 5.56 CHF Mid-Length Barrel and 12.7" R-ONE Handguard with BCG and Charging Handle - Anodized Black

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