all you need is a lower and 1 hour of time to have a fantastic AR build. I went with the 10.5" barrel for 300 BLK and i couldn't be happier, shoots like a dream out of the box and i can slowly upgrade things later on like trigger, BCG, etc
*****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.