This folding adapter is awesome! - MDT 1-Way Folding Stock Adapter

Bought the Fixed-to-Fixed adapter for a Sig556 ER (w/M4 style lower) using a Magpul UBR stock. I was trying to decide whether to get the 1 way or 2 way & am glad I chose the 1 way cuz there is absolutely 0 movement or wobble & the stock will only fold if u fold it, won't unfold on its own like other loose/weak adapters. These are extremely well made with very tight tolerances. When u 1st open the box,it's near impossible to fold the adapter by hand. But once u actually install it, the leverage of the stock length gives the perfect amount of resistance so that folding the stock is easy but won't move on its own. The finish is excellent as well & the lock up is solid. I can't say enough good things about MDT folders. Just a note for anyone who is new to the AR platform or inexperienced, this adapter will only work on AR platforms that use a long stroke gas piston system,similar to the AK47. It will not work on direct gas impingement AR15's since there is no clearance for the BCG to cycle into the receiver extension/buffer tube like the Law Tactical Folding adapter does.