The M14 is an aluminum exoskeleton replacement for plastic legacy AN/PVS-14 format night vision monoculars. This metallic chassis provides 3 modular access points, protects the image tube, optical cells and lower monocular housing (battery module) with a rigid wall of 7075 material. The chassis is fully backwards compatible to legacy optics, accessories and OEM components. The chassis enhances environmental resistance, emersion and withstands significant abuse. Coupled with the KVC D Collar, the M14 provides a 3rd interface/anchor point while significantly increasing logistical ease and maintenance to the objective lens assembly. The M14 2 piece kit is typically provided by KVC as part of a monocular system.