[PF] The Gunslinger's Handbook

[Chibbell]

As silly as it is I still love the idea of this build. :)

Just to be clear, the Rules as Written are clear that a Synthesist USES the Eidolon's BAB. What's unclear is how this stacks with other sources of BAB. I would love to see a ruling from Paizo on this. I personally believe it should stack. (edit: Maybe we could use the wild-shaped druid as a point of ref? I'll have to look into that)

There are other problems though.

When you add limbs and put weapons in those hands, the weapons aren't natural attacks. At best they are secondary, off-hand attacks. They aren't natural attacks so they don't benefit from Multi-Attack at Synth 9.

The kicker here is that they are most likely considered Off-Hand attacks since they are weapon-based.

So at best, the 12 attacks from pistols will all be at a -10.

If you could get Multi-Weapon Fighting then you could reduce it to -6. You'd need a way to get an extra arm on the Summoner though, as he would have to qualify for the feat, or find some way to give that Feat to the Eidolon, which I don't think is possible.