The AV able would be a good trade. I can't say as far as performance goes because I haven't used either mod. The thing is though, authentic mech mods hold their value pretty well. If you trade your HK for another authentic, quality mod, you will still have value to trade again when you get sick of that one. If you trade the HK for a mass produced Wal-Mart mod you will not have any trading value.
The Trading Post here on VU is a good place to trade if you want something new. You would be amazed to see how many mods trade hands there. If you made a trade thread for this mod I have no doubt that you could find a trade of equal value.
If you just want to try something new I have a few mechs that I don't really use. I just don't want you get ripped off.