Uzi
.308 Win
No. There is no need to. If all it is is a pistol grip, then you can put that on a pistol like so without NFA stamps.

Or you can put this Thordsen on an AR pistol with a 7.5 inch barrel.
View attachment 17182
Clearly you cannot because they are stocks.
Interesting concept. So, what could I use this for and what is it considered?
 
	 
					
						 
					
					
				 
 
		 
 
		 
 
		 
	
 
	 
	 
	 
	 
	 
	 
	 
	
 
 
		 
 
		 
 
		