If you are looking for a cheaper tactical folding stock for your airsoft M93R pistol, then you might want to consider this Gun Heaven M93R Tactical Folding Stock. This is made by TMC Gear and it's available right now at EB Airsoft for US$29.99, free shipping included. According to EB Airsoft, this can fit all M93R GBB pistols on the market and it's full metal.