Awesome explanation!Does not have a stock
OAL (in its shortest usable configuration) is over 26"
Has a vertical grip...
So, it can't be a rifle because it is not designed to be fired from the shoulder (no stock)
It can't be a "pistol" because it is designed to be fired with 2 hands not 1 (vertical grip)
It can't be am AOW because it's OAL is more than 26"
Here is where it gets fun
This is a rifle, it has a stock designed to be fired from the shoulder, and has a barrel over 16"
View attachment 115301
This is also a rifle but is an SBR (short barrel rifle) because the barrel is under 16" and is an NFA item ($200 tax stamp and so on)
View attachment 115302
This is a "Pistol" it is not designed to be fired from the shoulder (this particular SR-15 had a SBA3 stabilizing brace) and is designed to be fired one handed, the barrel is under 16" on most pistols but in reality there is no barrel lenght restrictions one way or the other
View attachment 115303
This is also a Pistol because it is not designed to be fired with 2 hands but it can have an ANGLED grip on the front
View attachment 115305
This is also a pistol. Because it is well a pistol
View attachment 115304
Now this is an Any Other Weapon (AOW) and falls under the NFA and a tax stamp. Because it is concealable by being under 26" OAL AND is designed to be fired with 2 hands (vertical front grip)
View attachment 115306
And then there is this, this is an "Other" because it does not fall in any of the above categories.
View attachment 115307
So here we have something that is not designed to be fired from the shoulder (this uses the SBA3 stabilizing brace) but it is also designed to be fired with two hands (the VERTICAL front grip) but it is also not considered "concealable" because the shortest usable overall length (tip of the muzzle to the end of the reciever extension) is 26.1" or more.