First, have a lot of money- Legal full autos are very expensive. The last LEGAL full auto M16 I saw for sale (transferable to a private citizen) was $16,000. Next, live in a state that permits private ownership of a full auto- some do not. Then locate a Dealer in your home state that has a license to deal in machine guns- commonly called a Class III license. You will need to apply (through the dealer) to the BATFE to transfer the weapon to yourself. You submit the written application, fingerprints, and approval from your local chief law enforcement officer, along with the $200 tax on transfers of a machine gun. You must meet the other legal requirements to own a firearm- age, criminal history, etc.
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.
What exactly do you mean by a PROHIBITED WEAPON? If you are asking if they will extradite state-to-state within the US - it all depends on the magnitude or the classification of the crime. If it is a weapon classified as a prohibited weapon by FEDERAL law (e.g.- automatic weapon - sawed off rifle/shotgun - silencer -etc), yes, absolutely.
In order to purchase a fully automatic weapon in the US, it must have been manufactured and NFA registered prior to the passage of the Firearm Owners Protection Act of 1986. Any fully automatic weapons manufactured after that date may only be transported to you if you are an FFL dealer with the appropriate Special Occupational Tax stamp, and a law enforcement letterhead authorising the transfer to you. However, most "automatic" handguns are actually semi-automatic, not fully automatic. Those are legal, and in the US, regulated as ordinary firearms.
I can tell you that if it can go full-automatic and is in the US, it could cost you 10 years in a federal penitentiary.
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A Glock 45 is a semi-automatic pistol. Glock pistols are a very popular type of pistol. In particular many law enforcement agencies in the US use them.
Automatic
The major revenue of US comes from their weapon business. They are the largest weapon seller in the world.
Without possessing a Federal Firearms License and corresponding tax stamps (either Class 3 S.O.T. for a dealer or Class 2 S.O.T. for a manufacturer), you need to be approved for a Class III NFA tax stamp for every automatic weapon you purchase. You would also be limited to automatic firearms manufactured and NFA tax stamped prior to the passage of the 1986 Firearm Owners Protection Act (or, for a fully imported automatic weapon, it would have to be manufactured, imported, and NFA tax stamped prior to the passage of the Gun Control Act of 1968).
The basic issue weapon was the M-1 Garand. A 30 cal. semi-automatic weapon that held 8 rounds fed by an internal clip. Most other militarys carried a bolt action rifle that held about 5 rounds.
In some countries which field it, it's operated as a crew served weapon. However, in the US military, it is fielded as an individual weapon.
You would need the correct Federal Firearms dealer's license, that permits dealing in automatic weapons. Its likely however that the US government would consider the weapon still to be government property.