[BlackDogAirsoft]

Sodium is working on one which may work out for you.
If you want a light pull, a zero trigger may work (AA Zero trigger, Laylax, TTI), however it is not that crisp since the trigger sears contact via a bearing (zero friction trigger).
The Bulltrigger seems unavailable right now (out of stock and site hacked). Try the S-trigger maybe?

 

[BlackDogAirsoft]

Otherwise, I love the SCW trigger. In my experience, the guide stopper gets scratchy, but it doesn't always in every setup. You can adjust pull, idk about overtravel though.

Judging by how the V7 works, you can probably stop overtravel by adding a dab of jb weld or something to this side of the pin:

Might be a little tricky though.