Grid Defense 16" 300 Blackout Upper Receiver - Tungsten Gray

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On Sale
  • Grid Defense AR15 16" Milspec 300 Blackout Upper Receiver in Tungsten Gray
  • Tungsten Gray Grid Defense AR15 16" .300 Blackout Upper Receiver
  • 16" .300 Blackout 1:88 Twist Barrel with 14" Free Float M-LOK Hand Rail
Sale: $329.00
MSRP: $399.00
  • 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 16" 300 Blackout Upper Receiver - Tungsten Gray

  • Tungsten Gray Cerakote Finish
  • Chambered in .300 Blackout (7.62x35)
  • A2 Flash Hider
  • 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride
  • Pistol Length Gas System
  • Grid Defense 14" M-Lok Free Float Hand Guard
  • Mil-Spec 7075 T6 Grid Defense Upper Receiver

*****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

Tungsten Gray
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1 Review

  • 5
    Very good

    Posted by Jonathan Stephenson on Oct 14th 2022

    clean finish, lightweight, and I can't wait to shoot it.

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