Yes
Idaho does not prohibit possession of either a semi-automatic rifle, nor a fully automatic rifle (machine gun) Fully automatic firearms are regulated under Federal law in ALL states. Possession of a fully automatic firearm is legal in Idaho so long as the gun has been registered with the Federal BATFE.
Yes, provided the firearm itself is legally obtained.
Provided you comply with all the federal, state and county laws, yes.
Anyone that owns a legal AK47 will know how to gain information on their rifle, since they are worth about $14,000 each. People that do not know are generally asking how to create a fully automatic rifle, which is a serious crime in the US, with a penalty of 10 years in prison.
Depends on where you live, how old you are, whether or not the rifle is registered with the BATFE. They can be owned if you go through the appropriate procedures unless you live in a state that doesn't allow it. but usually it is legal.
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?
A semi-automatic or fully automatic rifle.
Yes, the M16 is an assault rifle, and thus has fully automatic capabilities. The XM16E1, M16A1, and M16A3 can fire on completely full auto, while the M16A2 and M16A3 can fire a three-round burst, which by legal definitions, is considered to be fully automatic.
Possible, but, not likely
would you believe in 1887- in Mexico? Patented by Gen. Mondragon, the rifle was in caliber 7mm Mauser, and capable of semi or fully automatic fire.http://en.wikipedia.org/wiki/Mondrag%C3%B3n_rifle
A TRUE Assault Rifle is fully automatic. Federal law requires you be 21 to buy one of those in ANY state. However, what people may CALL an assault rifle (such as a semi-auto AK47) can be purchased at 18.