Handy, adaptable folding unit - Midwest Industries Side Folder Pistol Brace Compatible

Being able to use either a brace or stock is a nice feature. It accepts multiple third party clamp-on braces. I went with the Double Star unit. To fold, you have to overcome spring pressure, which is quite stiff fresh out of the box. Unfolding is much easier, but has enough tension to stay folded without flopping. Length of pull is very short - being a “pistol brace” after all, similar to a PDW stock. You need a picatinny adapter, the folding unit, and a brace / stock, which is a little expensive once everything is added up, but that seems standard for a folding setup.