Re: Massachusetts
Among the choices you listed, Watertown propably has the best chance of getting a permit that you may carry also. I used to have a Class A unrestricted permit. Boston, Cambridge and Allston are very hard to persuade them to give you a Class A permit, let alone unrestricted Class A. BTW, Silencers and Class III weapons are NO NO unless you have a Class III permit. Last I heard, there were only two in the Boston proper. A good friend of mine has one.