Frequently bought together:
Description
Grid Defense 7.5" 5.56 Upper Receiver
- Finished in Burnt Bronze Cerakote
- Mil Spec 7075-T6 Upper Receiver
- 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride
- 7" Grid Defense Octagon M-Lok Rail
- Pistol Length Gas System
- A2 Flash Hider
- Chambered in 5.56x45 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.