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OT Firearms 10.5" Upper Receiver Group w/BCG, CH - 300 Blackout

Please Allow Up To 7 Business Days For Assembly


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Old Testament Firearms in-house built 300 Blackout Upper Receiver Group.  Each URG is carefully assembled from quality made-in-the-USA components from a variety of top quality brands! Our goal is to provide upper receivers that provide exceptional reliability, quality and value!


This 300 Blackout Build consists of the following components:

  • 10.5" Faxon Duty Series Barrel - 300 Blackout
  • 9.5" Geissele MK14 MLOK Free Float Handguard
  • Aero Precision Upper Receiver (M4E1 Show In Photo, $30 Extra)
  • Toolcraft Nitride M16 Cut Bolt Carrier Group w/C158 Bolt
  • Diamondhead Lo-Profile Gas Block (Set Screw)
  • Stainless Steel Pistol Length Gas Tube
  • Mil-Spec Charging Handle (Upgrades Available)