Locks eyepiece in place to prevent focus drift during use and vibration
Direct replacement for worn or over-tightened locking rings
Compatible with PVS-14, BNVD-1431 MK2, MK3, and MK4 monocular housings
Cures issues where eyepiece backs out or focus settings are lost
Overview The eyepiece locking ring is the part that makes your focus setting stick. A ring that is worn, or that has been tightened past its limit, stops gripping, and the symptom is that the eyepiece will not hold a setting. Replacing the ring restores the lock. It is a bench-level swap — set eyepiece focus again afterwards and lock it do