It comes down to what is the mission, intended use? Im converting most of my Grendels over to 6 ARC when they need new barrels. It just makes more sense for what I usually hunt, varmints, predators, dogs and hogs. Maybe the occasional deer. The Grendel makes sense for bigger game and banging steel at long range. Been shooting 243 for a while, so, already have a ton of 6mm bullets, most of the Grendel powders will work in the ARC. So, its just brass and dies for me to easily convert.
You could build an upper for about 1/3-1/2 of your $1200+ ! Same bolt, same mags .and your shooting!
You could build an upper for about 1/3-1/2 of your $1200+ ! Same bolt, same mags .and your shooting!