An assault rifle by the true definition, or by the political definition?
If you're actually going to fabricate the receiver, you would need a Type 7 Federal Firearms License. If it's going to have any select fire option (full auto or burst), you'll also need a Class III Special Occupational Tax stamp.
If by "build" you mean assemble components which were already manufactured, that's perfectly legal, provided it's legal in your state. In the case of a select fire rifle, you'll need a Class III tax stamp and a legal (NFA registered) lower receiver.
A true "assault rifle" that can be transferred legally will run you 10000 and up.
If able to be legally transferred, multiple thousands.
Assault rifle is legally defined as a rifle having a detachable magazine, of intermediate rifle caliber(medium power) and selective fire. (machine gun). the Media has corrupted it to be anything.... AR=automatic rifle.
One cannot legally purchase an assault rifle anywhere in the UK. In the UK one may buy certain firearms, notably shotguns, but there are strict conditions attached to ownership.
A TRUE Assault Rifle is legally a machine gun. They are used by military and by specialized security forces, and shot by a very few collectors that can afford a several thousand dollar rifle. What people are CALLING an Assault Rifle, such as the AR-15, is nothing more than a semi automatic rifle. They are used for hunting, target shooting, and self defense.
Assault rifle.
The SOAR (Special Operations Assault Rifle).
There are several different assault rifles - both by the true definition of an assault rifle and by the political motivated BATFE definition of a so-called "civilian assault rifle", manufactured by several different outfits. Which assault rifle did you have in mind, specifically?
The first true assault rifle debuted in 1942.
You will need to define assault rifle, and where you live. A TRUE assault rifle is a machine gun, and transfers of them are tightly regulated by the Federal government. What most people CALL an assault rifle is nothing but a semi-automatic rifle, and in most of the US, does not require a license to possess.
Only with a very small assault rifle, or a very large purse.
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