This is brand new, I put it on my Z5P while I was awaiting my Form 1 stamp which I got yesterday. Never even shot the gun with it on it though. This is a SB Tactical SB89 arm brace for the HK MP5K/SP89 family of pistols and their clones. Looks and works great. When I bought this thing Atlantic Firearms sold them for $250 which is what I paid. I noticed they have them on sale now for $200. Therefore, I am asking $150 shipped. These units have pre-installed brackets and buffer tubes. Just slide onto the gun and insert the top and bottom pins to hold it in place. It is pictured on my Z5P (gun not included of course).

Here is a link to Atlantic who has more info on these pistol arm braces:

First to say they take it, gets it. I do have it cross listed. We can meet locally for a FTF (I am in Plano) - will take another $10 off if local (so $140). I can be reached via PM or email -