Mech weapon Thundergauntlet

[Wesrolter]

I am curious if there is something I missed or if there is a fundamental mistake with this weapon.

Assault arms give your Mech 3 Upper limb weapon slots, the most out of the arms.
A Thundergauntlet is only available as a Upper limb weapon, needing 2 slots for 1 of them.
Heres the problem, they have a special PP ability.
As a standard action, the mech can use a thundergauntlet as though it were a ranged weapon with the blast weapon special property and a 30-foot range. If the mech has two thundergauntlets, it can use both as part of this attack to deal medium damage rather than low damage; use the average of the two thundergauntlets’ levels (rounded down) to calculate this damage.
How is a Mech supposed to use the higher damage for this ability of they only have the slots for 1? Is there an upgrade or something I am missing?

[Nimor Starseeker]

I see the diléma. I cant see any solution other than its a typo and should be 1 slot instead of 2 or the second thundergauntlet just costs 1.

[Joe Pasini]

Thanks for bringing this up!

The errata has been updated to reflect that a thundergauntlet uses 1 slot, not 2.