Product reviews for Battle Arms Development WORKHORSE - Upper Receiver Assembly - 223 Remington/556NATO - 10.5" Barrel - Carbine-length Gas System - Anodized Finish - Black - A2 Flash Hider - WORKHORSE 9.5" M-LOK Free Float Handguard - Does Not Include Bolt Carrier Group or Charging Handle WH-UR-10.5-556

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