Great product, fits perfect on my lower. Even with the shorter barrel, it's still accurate out to 100 yds.
*****Ammunition Notification***** Ghost Firearms 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.
Please allow adequate time to build and test fire all uppers