>>14751378Generally, in-universe, Digital Weapons are your best bet; They're usually single-shot, but some really rich nobles conceal them in rings, amulets and the like.
It might be possible, if a little too simple, to just hide them in the usual ways- A small derringer can be at the small of the back, inside flowing robes, that kind of thing. (Or go as a Techpriest. Do you really want to search the Techpriest?)
Or, keep the weapons as 'part' of a Servitor, so that artificial arm pops off- Presto, lasrifle! (Though you might as well build the weapons into the Servitor itself.)