Grid Defense 10.5" 5.56 Upper Receiver - OD Green

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On Sale
  • Magpul OD Green AR15 Upper Receiver with 1:7 Twist 5.56 Barrel and M-LOK Rail
  • Grid Defense Milspec 10.5" 5.56x45 NATO AR 15 Pistol Upper Receiver
  • 10.5" Barrel with 9" Free Float M-LOK Hand Rail
Sale: $299.00
MSRP: $379.00
  • AR15 Bolt Carrier Group and Charging Handle | Mil Spec
  • AR15 BCG | 5.56 NATO/.223/.300 Blackout | Mil Spec
  • Nickel Boron M16 Bolt Carrier Group
  • M16 Bolt Carrier Group - Titanium Nitride Coated
  • Trinity Force UL - B.U.S. Polymer Sights
  • Magpul MBUS Gen II Front and Rear Sight Set
Frequently bought together:


Grid Defense 10.5" 5.56 Upper Receiver

  • Finished in Magpul Olive Drab Green Cerakote
  • Chambered in 5.56x45 NATO
  • 7075-T6 Milspec Upper Receiver
  • 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride
  • .750 Low Profile Gas Block
  • Carbine Length Gas System
  • A2 Flash Hider
  • Made in the USA


*****Ammunition Notification***** Grid Defense test fires every custom upper to verify cycling. We do not guarantee cycling with all ammunition due to vast differences in the quality of ammunition. We will only warranty cycling with US made ammunition. We will not warranty cycling with imported, steel cased or reloaded rounds.

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Additional Information

OD Green
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