Upgrades from Agency Arms include their Octagonal Extension Tube Kit (increases total capacity to 7+1, 9 if ghostloading), Agency Arms Extended Carrier, Agency Arms Extended Bolt Release, Agency Arms Extended Charging Handle, modified Bolt Carrier, Receiver Loading Port Machining, Agency Arms MLOK® handguard/rail, Gunsmith trigger job, and an oversized dome safety. The barrel is ported, QD mounting cups are added, and the Extended Carrier and Bolt Carrier are polished and refinished in a Titanium Nitride (Gold) PVD coating.