Yes and no. You can not turn it in to a full auto by dropping in your own DIAS or milling it out to take the M16 parts. If you want to legally turn it full auto you will have to purchase one of the few and very expensive registered DIAS or lightning links out there. Or if you are really adventurous and looking for a new job go through all of the paperwork and the rest of the process to become a manufacturer and you can make full auto weapons for the police and military. You can not turn it in to a brand new full auto gun however as the time to register ones by "civilians" has long passed. (1986)
Within a very limited set of circumstances, yes.
yes
Don't think so: laws here say you can't have EVEN semi-auto rifles. Let along full-autos.
AR-15 = Semi-Auto civilian rifle M4 = Select Fire Military rifle
AR 15 - semi-automatic only M16 - depending on variant capable of full auto or burst fire. Will also fire semi-auto.
Not legally
Legally, no.
It is the Carbine (short rifle) version of the AR15. AR stands for Armalite Rifle. It is a semi auto rifle.
18 for a Title 1 rifle (16" barrel minimum, semi auto only), 21 for a pistol or NFA restricted variant (full auto, barrel shorter than 16" on a rifle lower).
If stolen yes, if seized legally (say as a debt or by the police) no.
Licence requirements are based on the laws WHERE YOU ARE. They vary greatly from one country to another, and one US State to another. And YOU did not tell us where your are. In most of the US, no, a license is not required to purchase a semi-auto AR15. Your spelling of 'licence" may indicate you are not in the US. In Australia, a licence is required to obtain ANY firearm. An AR15 is a Class D firearm, and cannot be owned by the average private citizen.
Yes. The Colt AR15 is the original semi-auto version of the military M16. The rifle is now made by many manufacturers besides Colt.