polishsupremacist44L3 PVS7 Compatible Eyepiece Retaining Ring. Aluminum construction retaining ring, compatible with the PVS7B/D series of devices. Stronger and easier to install than the original polymer eyepiece retaining rings from L3. https://www.fotonika.online/product-page/l3-pvs7-compatible-eyepiece-retaining-ring
