Foreword: I may have ended up being too nitpicky over tech, so if any tech admins feel like it may be demanding too much from the writer, feel free to veto my concerns. I'm going to critique this from a practical engineering point of view.
Firstly, I'm not sure that the whole "up to a heavy blast exceeding many anti-tank weapons in destructive output" thing is entirely appropriate for something as small as a palm weapon. Not unlike a LASR rifle your weapon would need all the conducting cables, cooling systems, fuses, power transformers, and all that other jazz. This is so you can concentrate and fire all that energy in such a way it won't totally melt the arm off the guy who uses it, while also making sure it won't burn out the entire suit's power grid. I'm not sure exactly how advanced SARP's technology level is precisely, but given I haven't seen very many PA running around with DR 6 palm/eye/finger lasers I would have to assume that such a level of miniaturization doesn't really exist -- either that, or that people find packing so much firepower into such a tiny mechanism to be considered overpowered.
As such I would suggest decreasing the power to anti-personnel (DR 2), or placing the module somewhere with a lot more room for equipment (shoulder or forearm mounted) and bulking it up considerably. In the latter case that might simply make it deadweight if a soldier carries a DR 6 rifle anyways -- but unnecessary bulk is an inherent problem for a dedicated weapon system that can only be fired once every few minutes. It really might be more practical to have a disposable capacitor system.
Secondly, you should specify what sort of energy the armor absorbs. Things like electrical discharges, plasma attacks, photons (lasers) greatly differ from one another in how they damage things, and would each require different methods to convert said attacks into usable energy. I can see many potential bad guys trying to exploit damage types the field can't absorb, in future roleplay, so I think it deserves at least a brief touching upon in the description.
Thirdly, have you gone over the potential overloading issues of the suit? Anything that absorbs and converts energy can, theoretically, simply have energy pumped into it until there is too much for the converted to handle -- at which point it will burn out or melt. You may want add a small note on how much firepower it can take at any given moment before overheating; this is yet another thing that may be pivotal in battles against this suit, so also deserves noting for future GMs.