This Aero build is ready to put on your lower and take out for next deer season. It comes with an accurate CMMG barrel, an Odin adjustable gas block, and a Houge handguard. A Burris mount secures a Leupold Freedom 3-9 x 40 to the top of the Aero upper. The semi auto recoil system of the AR platform offer less felt recoil because of the gas needed to cycle the bolt. The end result is an accurate platform that can be used anywhere in Michigan during firearm season.