The Kauger arms is using the same loophole as the mossberg shockwave. If it leaves the factory without a shoulder stock and is a smoothbore and is at least 26 inches overall length it is a "firearm". Barrel length does not matter just the overall length.A firearm needs no special paperwork like a shortbarrel shotgun. A shotgun has a stock to fire from the shoulder is at least 26" overall length and a barrel length of 18".
Last edited by mike7mm08; 05/31/19.
