The ModWing is an optional add on for our Rev-Con™ holsters. It increases concealment by pressing against your belt, and tucking the grip of your gun in toward your body. It is not compatible with any of our Protos-M® holster. This includes all necessary hardware to mount the ModWing to your Rev-Con™ holster. The ModWing is reversible, and compatible with the Rev-Con™ in both left and right handed configurations.