ANPVS-14 J ARM ADAPTER WITH NVG DOVETAIL SHOE OR BAYONET INTERFACE. Introducing the IC PVS-14 J Arm with dovetail or bayonet interface. With a MIL-SPEC J Arm operators only have an option of the bayonet interface, limiting helmet mount choices. Available in both bayonet and dovetail, this friction set mount allows for fast, easy, travel from left to right eye, and back again. AN/PVS-14 J Arm Adapter Specifications. Weight Dovetail: 1.58 oz. Compared to the MIL-SPEC J-Arm: 2.17 oz. Material Construction Type III anodized, Light Weight, Aerospace Grade Metals and High Wear Resistant...