Magpul M-Lok forend for Mossberg 500/590/590A1

As title says 

I have a Magpul forend for Mossberg. Used for only 25 rounds then put the stock forend back on. I am asking $40 and shipping is on the buyer. I don’t remember where I put the castle nut wrench if I find it, it will obviously be included. Thanks for looking.