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AR-15 and M4 Upper Assemblies

AR-15 Rifle and M4 Carbine Upper Assemblies by American Spirit Arms. Upper assemblies include forged upper receiver, barrel, bolt, carrier and charging handle with your choice of front iron sight or gas block.
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Features and Calibers include:
  • Flat Top
  • Fixed Carry Handle
  • 7.5 Inch Pistol Barrel
  • 10.5 Inch Barrel
  • 16 Inch Barrel
  • 20 Inch Barrel
  • Chrome Moly Barrel
  • Stainless Steel Bull Barrel
  • Dissipator
  • 5.56mm, .223, 9mm