Description
Grid Defense 10.5" 5.56 Flash Can Upper Receiver
Hard Coat Black Anodized Finish
Made in the USA
7075-T6 Mil-Spec Upper Receiver
10.5" 1:7 Twist 4150 M4 Profile Barrel - Black Nitride
Chambered in 5.56x45 NATO
Carbine Length Gas System
.750 Low Profile Gas Block
12" 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.
