Were slug throwers ever used as standard issue equipment for armies?

Question

Slug throwers are inferior to blasters in most regards, adding the complexity of bullet ballistics that blasters don't deal with. But specialized units, improvised guerilla forces, and mercenaries make use of slug throwing weapons so there is a place for them in the Star Wars universe.

While most slug throwers cannot pierce a Stormtrooper's armor, they can absolutely annihilate Jedi as melted slugs can create deadly shrapnel, and can't be reflected back at the shooter like a blaster bolt could.

There have been a few situations where it seems feasible slug throwers were issued as standard equipment to standing armies, such as when Order 66 was carried out by the Grand Army of the Republic. I have not seen any such accounts but it's big universe far, far away and there may be examples I haven't heard of.

Were slug throwers ever made standard issue equipment of a standing army?

Answer 1

One example of widespread use of slugthrowers was on Haruun Kal, featured in the Legends novel Shatterpoint. Slugs (in both handheld and vehicle-mounted forms) were the standard-issue weapon of the planetary militia, and both sides in the guerilla Summertime War used them.

In this case, the main reason for using slugthrowers was their lower technological base; Haruun Kal has metal-eating bacteria that were notorious for ruining the circuitry inside blasters, whereas the mechanical action of a typical slugthrower was resistant (though not immune) to the bacteria.

Although a fair number of slugthrowers ended up pointed at Jedi over the course of Shatterpoint, there's no indication that they're substantially better than blasters. There is the slight advantage that slugs can only be blocked by a lightsaber, not reflected as a blaster bolt can, but neither is particularly suited to fighting Jedi.