No, this buffer tube is for pistols. You will need to check with your local ATF office regarding legality of attaching the Zulu to a pistol.
Tom B - I know it's for a pistol. I'm mounting it on an SBR MCX with a tax stamp from the ATF that uses a knuckle between the end of the receiver and the tube - thus the Odin Works butt stock tube creates a length of pull that is too long due to the knuckle. That's why I'm looking for a pistol tube. The question is will the Odin Works butt stock fit on the tube, not whether it's legal or not.