Some restricted stuff requires an occupational license to justify getting the permit to carry/use said restricted item. Corporations are also more likely to be granted permits since they have more oversight.
I helped one of my players work out a sort of complicated legal scenario. There was him, the private citizen/retired Army Ranger whose contract was sold to Ares. That's a legitimate UCAS SIN. Then he's got a corporation under a pseudonym. That single person corporation is issued a SIN by Ares and is operating as a subsidiary, technically a franchise, of Ares Macrotechnology. If he does very well, he'll get bought out and engulfed into one of Ares' other subsidiaries like Hard Corps or Knight Errant. If he does poorly, he gets cut loose as a rogue company and all support and funding gets yanked. In the meanwhile, he can operate in the shadows as a probationary franchise. When he operates, he can go by the name of the company and everything ties back to that corporate SIN, which may or may not be released by Ares at their discretion. He, the retired Ranger, has some cyberware and bioware, which rather than getting yanked out, was left in as the retirement package and the permits for that is covered by the UCAS government while in UCAS territory (including Seattle). Inquiries into those tag back to his real SIN and throw red flags at the DoD. He, as the Ares franchise has a license to operate as a detective and bodyguard. Authorization for those licenses get certified by Ares. Those license fees have to be paid to the Port Authority of Seattle. That grants him the right to operate as a bodyguard and private detective within the Seattle Metroplex. Since it is an Ares SIN, Ares collects some income tax from his operations. If he pays himself, then he's got a UCAS income tax to pay. In any case, the Franchise has permits to carry firearms and each weapon needs to be registered. The Franchise also has permits to carry/use surveillance equipment.
That all seems pretty convoluted and complicated, and that is partly intentional. He's got a lady friend corporate shark that has structured the whole thing and if there is any sort of issue with permits, there is enough complications and a lawyer's phone number thrown in that a beat cop is just going to push the matter above his paygrade.