So you are somehow dissatisfied with the range enhancer that is already in the low slot?

Make it an effective range mod, and give it like 2-4-5%
We could also take damage mods, and make them racially acclimated instead of weapon type.
E.g gyros go in lows, effect projectiles.(optimal range/RoF bonus?)
Plasma field stabilizers go in highs, affect Plasma hybrid(possible RoF bonus?)
Magnetic field Stabilizers go in lows, affect Railgun hybrid.(effective range bonus?)
Heat sinks go in highs, give lower damage bonus, but also affects overheat.(maybe gives optimal bonus? 1-2-3% if so)

Edit: effective range enhancers would go with lows, and would be universal.(unless we mix the bonuses with dmg mods?)

I would guess that he means weapon range enhancers.
The answer to that is no.

I would guess that he means weapon range enhancers.
The answer to that is no.

Properly balanced I think it's intriguing idea. We already have DMG mods, at least a weapon range enhancer would compete and would be a viable mod.

I don't know if a percent increase would be the way to go though, because that would heavily favor long range weapons. Similarly to how DMG mods heavily favor high rof weapons.