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10mm Upper Receiver Group (BB)

  • $750.00

Our Macon Armory10mm blowback upper receiver group is based on the Colt pattern. Our barrels are Cerokote coated and hand-crafted with a 1:10 twist and 5/8 x 24 muzzle thread using 4140 Chrome Molybdenum steel, providing both accuracy, durability and versatility. Uppers are built around an Aero Precision non forward assist upper receiver and include blast deflector and 3/4 ejection port cover.

This blowback upper receiver group is currently available as a special order item. Pleas contact Rudy at (478) 474-2990  for details

AR45 BB upper receiver group includes:

  • Barreled upper with bolt
  • Heavy Buffer
  • KeyMod free float forearm
  • A2 flash suppressor
  • Magazine latch as required


It is the customer's responsibility to be aware of all applicable laws and regulations regarding purchase and ownership of upper receivers with a barrel length of less than 16".