I don't own all of the books, but I don't think this mod exists (please correct me if I'm wrong).

My thoughts

Attach to a pistol or carbine with the Inacurate ability.

Ability: Reduce the Inaccurate ability of this weapon by 1.

Mod options: 1 reduce Inaccurate ability by 1 mod. 1 Reduce Cumbersome by 1 mod

Rarity: 3

Cost: 500 credits

Too overpowered? Too expensive? Thoughts on a better representation?

Since it only removes penalties rather than granting any type of bonus, it's unlikely to be abused. In fact, it's probably unlikely to see much use since most players never buy weapons with Inaccurate to begin with, and I'm not familiar with too many pistol or carbine weapons that have Cumbersome. However, I'd limit it to pistols as carbines should all have a stock (whether fixed, folding, or collapsible) included.

What about changing the cumbersome quality to accurate +1. Or any other mods that make sense?

I'd say make it the flipside of the pistol grip and allow Range Heavy to be used on the modded pistol.

2 hours ago, 2P51 said:

I'd say make it the flipside of the pistol grip and allow Range Heavy to be used on the modded pistol.

The Dragoon does that. Found in Stay on Target

1 hour ago, TheMOELANDER said:

The Dragoon does that. Found in Stay on Target

Yes, along with being overpowered in almost every way. It's one of the few weapons I ban.