These are new production 9MM SMG UZI barrels with the HK 3-lug adapter. This is the only SMG Uzi barrel where the 3 lug adapter is machined as an integral part of the barrel. The overall length of the barrel is 9.150″. Can be used with your HK 3-lug mount suppressor. Includes a modified barrel nut. This barrel is for a full sized Uzi that uses SMG spec barrels. They are 1 in 10″ twist 9mm barrels that are machined then parkerized as called for on the IMI print. It will not fit a Mini Uzi or a Full sized Uzi that uses semi auto spec barrels.
All NFA rules apply. These barrels can only be legally used in a registered machine gun, registered Short Barrel Rifle (SBR) or a pistol. They can not be used in a standard carbine with a 16″ barrel unless you register your carbine with ATF NFA as a legal SBR.