Grid Defense 10.5 upper, 12” rail, flash Can
It shoots just fine without any any malfunctioning. Georgia Arms Ammo
*****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.
