In America, yes. You must have the proper paperwork and taxes paid.
A fully automatic weapon means you can hold down the trigger and it will continuously fire. Semiautomatic means you fire one round for each pull of the trigger. A selective fire weapon is capable of fully automatic fire, and lets you select between the two. To own a fully automatic weapon in the US, you need a Class III National Firearms Act tax stamp for the firearm. The importation of fully automatic weapons for civilian sales was barred in 1968, and the domestic manufacture of fully automatic weapons for civilian sales was barred in 1986 - however, weapons of either type manufactured before the effective date of their import/manufacture can still legal be transferred between licenced civilian owners.
Yes
After you apply to the police asking for a permit, you can buya gun in Pennsylvania.
The short answer is no, unless you have a firearms collector's licence. A fully automatic weapon is a restricted weapon and unless you have the correct licence you are not allowed to import them or own them. The collector's licence is difficult to get and restrictive.
Yes, provided everything's been done in accordance with state and federal law.
Provided you follow all the appropriate laws, yes.
Yes, provided the firearm itself is legally obtained.
There are semiautomatic versions of the Tommy gun (Thompson sub-machine gun). They are legal to own. A fully automatic Tommy gun is legal in Texas only if you have the federal license.
It is legal for a private citizen to own a fully automatic rifle in MOST US states IF you comply with Federal law (National Firearms Act- requires registration of full autos with the BATFE). Rather than list all the states that DO, why not post the state or states you are asking about?
Because its fully automatic, and was not importable pre 1986 (when the assault weapons ban was introduced). Only fully automatic weapons produced pre 1986 and were already legally owned in the US are now legal in the US. Although it IS legal for Police Departments to own Glock 18's, if they have been trained by Glock. It is also legal to own (in certain states, with strict stipulations), a Glock 17 (or any other model besides the 18) with a fully automatic sear. Which is essentially a Glock 18. **I Am NOT A Lawyer***
As long as you are not a felon and are properly licensed to carry and own a weapon in your state. Actually, that answer is only partially correct, at least in regards to the U.S. In the U.S. it is legal to own fully automatic weapons in 38 or 39 states. You do not have to already own a firearm of any kind, nor do you have to have a permit. In order to purchase any class 3 item, the only requirement is that you live in a state where it is legal, that you are 21 or older, and that you have no felonies or disqualifying misdemeanors. Basically, if you can legally purchase a handgun from a dealer, you can purchase NFA/Class 3 items.
GET TO A GUNSMITH IMMEDIATELY!! It is against the law to own a fully automatic weapon that is not properly registered with the federal government. Even though a part(s) failure is causing it, you are in possession of an illegal weapon.