Only way in here is through 3 crouch spot vents. Those doors do not open from any where else. Only from the button on the inside. This is the secret armory after the "gears" secret. Only way in is through the crouch vents. IDK if they can come from both vents, i think only 1. And lastly, this spot. Only way in is through the vent as well. The gates by the moving piston things don't open anywhere except for the buttons in this room. @Soft Serve told me there is no way to open the any of the doors from anywhere else. I haven't confirmed it yet myself.