Description
Grid Defense 10.5″ .300 Blackout Stainless Steel Upper Receiver
Finished in Magpul Olive Drab Green Cerakote
Mil-Spec 7075-T6 Upper Receiver
10.5″ 1:8 Twist 416R Stainless Steel Barrel
Chambered in .300 Blackout (7.62×35)
A2 Muzzle Device
Pistol Length Gas System
9″ Grid Defense Octagon M-Lok Rail
*****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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