Who makes the strongest upper receiver?

[schrödinger's cat]

Keep in mind that AR15 receivers last indefinitely in high volume, full auto fire where multiple barrels and bolts are shot to the point of being deadlined and replaced.

The receivers keep on going.

If you want to support a heavy, longer barrel, I personally like billet receivers, leaning to Mega or Seekins.

So does this mean that although my goal is accuracy with a 24" bull barrel it would be a better idea for me to save the $140 and just get the Anderson lower and use that money to upgrade my trigger from a RRA to a Geissele DMR ?