Standard “horn” interface PVS-14 J Arm used in conjunction with a Rhino mount. These are the bare minimum arm you need to couple your PVS-14 to a USGI Rhino mount or other “horn” interface mount.
These will not work with a dovetail interface. Fitment may be tight as tolerances between mounts and arms can vary a little. It’s not uncommon to forcibly insert the arm into the mount or require some fitment. Just exercise caution as they are plastic.
These are also referred to as PVS-14 transfer arms, PVS-14 J Arm, PVS-14 J-Arm, USGI J Arm, USGI J-Arm, etc.