Description
Grid Defense 7.5″ 5.56 NATO Upper Receiver
Mil Spec 7075-T6 Upper Receiver
7.5″ 1:7 Twist 4150 Light HBAR Barrel – Black Nitride
7″ Grid Defense Octagon M-Lok Rail
Hard Coat Black Anodized Finish
Pistol Length Gas System
A2 Flash Hider
Chambered in 5.56 NATO
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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