Before I get flamed, I have an 83. I like it and I'm keeping it.
That said, the 83 makes sense in countries where civilians can't own military caliber weapons. In the US, its a heavier gun than a 75D PCR, it holds less ammo, the 380 round has marginal performance for self defense. It isn't any more accurate than the 75, the recoil isn't significantly less, the ammo is more expensive, holsters are harder to find, etc.
In other words, why? Like it for what it is and save your money for a better gun.