Don't overlook the Aero "complete" uppers don't include a BCG or charging handle.
I have a Ruger MPR that's nominally a 3/4 moa gun with ADI 69gr ammo. It has a unique bolt carrier that's chrome lined and nitrided, with a very slick polishing job; it's super easy to clean. The trigger is pretty nice, mine had a touch of creep but I only noticed it dry firing. It has a unique barrel profile that is on the heavy side. Also, the handguard holes/slots are not well chamfered and can be rough sliding it through one's hands. Overall, I'm really happy with mine and have slowly upgraded it over building something entirely custom.