You're actually right, i keep forgetting that tier 0 is a thing, so i thought tier 2 was tier 1. So i spoke falsely.

That being said, i still think the Beta's are questionable. Guns are innately extremely powerful because bullets are so fast. The human factor is the only thing that keeps them balanced, but when used by robots with perfect auto aim, they are essentially 100% undodgeable by low and mid tier targets. Something to consider.
Edit: Although granted, they are supposed to work together against a tier 5 or 6, which might excuse it. LeeRoy will have to judge on this.

Also, you probably need a number on the heat generated by that axe.