[@Nerevarine]

I don't think things would fall as far back as Hackbutts and handcannons. But pretty much any smooth-bore fire-arm might be the norm since they'd be easier to handle. But rifled barrels can still be machined with normal work benches; they'd just be expensive. But the use of springs can still keep contemporary firing mechanisms in vogue (if not going to center or rim-fire weapons with percussion caps, at least using flint or matchlock rifles).

So with that, I suppose if we're allowing this then I am more than happy to express interest.