I bought this kit for an UZI that I was going to buy but ended up buying a M11/nine instead. I totally forgot that I had this until I saw it under a bunch of boxes. It is brand new but doesnt have a box or instructions. Comes with the Bolt (you use your 9mm spring and rod), threaded barrel, 2 Blackdog machine Magazines. Retails for $550... Ill let it go for $400 shipped.