Yes, in accordance with federal regulations. Iowa is reported to be a state which won't any other type of NFA firearms unless they fall into the Class III category.
Yes
Yes
In America, yes. You must have the proper paperwork and taxes paid.
Explosive munitions,and rockets unless you have a class III license. Fully automatic weapons are completely legal, but you have to pay a pretty penny for the weapon, plus $200 to the ATF.
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.
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***
Yes
Yes
Automatic weapons are prohibited in every state. You can have a semi-automatic rifle though.
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.
No. CCW laws specifically state that long barreled weapons (which a submachinegun with a buttstock would be considered, regardless of barrel length) and fully automatic weapons may not be carried. A semi auto pistol based on the design of a SMG would be legal, however.
Yes, they are legal under State law. Idaho state law does not prohibit ownership of fully automatic firearms by private citizens. However, Federal law requires that any fully automatic firearm have been registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives.
Yes- if registered with the BATFE and with the State Police.