Ebladed Outkast Autococker with Free Flow Internals and other parts not really relevent here.
Lower cocking pressure.
Makes marker slightly heavier (not much, though).
Destroys your Autococker's body!
Going over the strengths first, this hammer does a great job of lowering the pressure of your Autococker. It's much easier to push a heavy hammer than a strong spring, so that means lower PSI when cocking your marker. Not really sure if it'll stop you from chopping a ball, though, I've got eyes for that... You get more recoil in your 'cocker, though, because there's more moving mass, and even the slightest amount can make a difference there. Since it weighs more, it makes your marker heavier, too... by the order of 30-40 grams, though, so I wouldn't worry about that.
The main thing about this hammer, though, is that it'll chew through your body. If you use it regularly for a long time, you'll notice a fair amount of wear. Tungsten's way harder than even anodized aluminum, and the seer pushes the hammer up a little every time it recocks. What I'm getting at here is that over time you'll get a decent gouge in the top of your lower tube. My Outkast body has a huge mark on the top of the lower tube from continued use of this. I was looking around some forums and found that many people were complaining about this issue, so I took my hammer out and really checked the inside of the body, and there it was, giant mark. Rougher surfaces are more inconsistent than smoother ones, so you'll get less consistent hammer strikes, more variation in velocity, and ultimately, a less accurate marker.
I really like what this hammer does for a marker - but what it does to the body is crap. Knowing what I do now, I'd never buy this. Any good part won't destroy the body of your marker, so I'd have to say this is a terrible choice for an upgrade. I'm giving a 1 of 10 because any part that actively chews through the body of your marker is clearly the worst quality available.