This dual Mobius camera mount attaches to any picatinny or weaver rail. With this mount you are able to simply slide in a forward facing camera (muzzle cam) and a self facing camera (selfie cam). This makes for endlessly entertaining gameplay footage for airsoft or paintball players. Might be usable on real steel guns as well. Because the mount is plastic it is very light and does not add much weight to the front of the gun. It also extends the cameras far forward so only one spot on the rail is used to mount it. The mounts have been designed to address some of the issues on the Mobius cameras such as the SD card popping out, an added wall makes that impossible as long as the camera stays in place. Also for the selfie camera an added corner piece blocks out the LED light and wont give away your position in dark environments. Please Note: The mount does require a user added nut and bolt. If using a longer than allotted bolt drop it in from the top (mount closest to the rail) and add the nut at the bottom. Otherwise you can glue the nut into the camera base and screw in bolt through the bottom opening in the rail clamp. For the paranoid types a zip tie around both camera's will add an extra level of retention. Uses: This is great for some with two Mobius cameras or with one and the need to alternate between forward and rear facing options. If you are using two cameras this works great for shooters who like to grab the front hand guard (C-clam, Costa Grip, Thumb Over Bore) the selfie camera is moved far out and won't block get blocked by the hand.