CORE® 300 Blackout Truck Gun Upper

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Limited Time Offer:

Add a Holosun HS403C and get both Items for 499.99! -->

Discount Applied Automatically at Checkout when both items are in cart.


  • 7.5”, 300 BO, 4150 Nitride, 
  • Nitride M16 Bolt Carrier Group
  • CORE V.2 Charging Handle
  • Pistol Length Gas System
  • CORE® Forged 7075-T6 M4 Flattop Upper with Internal Dry Lube and Laser T Marks
  • CORE® 7" MLOK Rail
  • Standard A2 Flash Hider
  • CORE® Gas Block
  • CORE15’s NO BS Lifetime Warranty!

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