Obsidian Arms Big Bore Rifle


Out of stock


  • Obsidian Arms Billet Lower
  • Obsidian Arms Forged Big Bore Upper
  • Luth-AR MBA-2 Stock
  • Obsidian Arms Enhanced Firing Pin
  • Obsidian Arms Enhanced Cam Pin
  • HIPERFIRE Enhanced Duty Trigger® Designated Marksman
  • Satern 16″ Barrel in .450 Bushmaster, .458 SOCOM, or 12.7x42mm
  • Obsidian Arms 15″ Handguard
  • Obsidian Arms Low Profile Gas Block
  • Obsidian Arms Colossus Brake
  • Ergo Grips Sure Grip
  • Includes:
    • 1x Magazine
    • Box, Manual

Additional Cerakote colors are available, please call for details.

SKU: N/A Category:


The Obsidian Arms Big Bore Rifle combines all the best parts that we make with the best parts we can source here in Minnesota and the Midwest. Starting with our Billet Lower, Forged Big Bore Upper, and Hand Guard we have incorporated the Luth AR MBA-2 Stock, HIPERFIRE Enhanced Duty Trigger® Designated Marksman and Ergo Sure Grip for intuitive fire controls. All these parts add up to a very powerful system when the shots are delivered through the Satern barrel and our Colossus Brake. Our Big Bore rifles are available in .450 Bushmaster, .458 SOCOM, and 12.7x42mm. We will put this gun against any competition firearm in its class.


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