I'll go with tarosean.
With post in the NFA section, I assume it's a Vector smg and they do move if the trunnion is correct and the gun runs well.
Harder to sell the kit - made by Vector? - for more than the cost of Racine Joe's excellent kit. The Vector steel .22 mags by themselves are quick sellers though.
The Mossad has the best re-sale value of the Uzi suppressors, at least to me.
Proven track record, but not as likely to sell by itself unless at a reduced price. New ones are still available and the double tax is a reality unless the deal is in-State.
If it was mine, I'd figure the price of the kit at cost, the suppressor/tax at 200 or so below, and price the Uzi according to how fast I wanted it gone.
If you want to try breaking it up, you should probably sell the kit and Mossad first. Otherwise you might be sitting on them for a while. The sub gun by itself will be no problem.
JT