Butler Creek steel side folder. I put on a piece of rubber where your cheek will rest to make it more comfortable when shooting. It can be taken off in about one second if you don't want it on. Otherwise factory stock.
I have one of these for my Ruger 10/22 and think they are the best folding stock that money can buy. Selling this one because I went to a pistol grip only format on my Mossberg. Comes with all the parts. The blue thing is a rubber band that is just keeping the spring with the stock so I don't lose it before I sell it.
These are about $100 new. Midway has them the cheapest for $88.99 plus shipping. Their shipping is kind of high so anyway you look at it, this stock is going to run you $100.
I am selling mine for $65 plus actual shipping. I will ship it anyway you like to save you money.