Suitable for installation on GPNVG units with a 38mm objective lens outer diameter, or on any PVS-31 night vision device with a 31mm or 32mm objective lens outer diameter.

Please note: the price is for a single unit. If you are using a PVS-31, please purchase 2 units; if you are using a GPNVG, please purchase 4 units.

PVS31 Lens Cover – Rugged Protection & Precision Focus for Night Vision Devices

The PVS31 Lens Cover is purpose-built to protect and enhance the performance of night vision devices like the PVS-31 and GPNVG systems with 31mm–38mm objective lens diameters. Engineered from rugged 6061-T6 aluminum, this precision-built cover ensures long-term durability in demanding field conditions.

Unlike traditional friction-fit caps, it secures directly to the objective lens threads for a firm, no-slip fit. An internal O-ring effectively seals out dust and moisture, while a sacrificial polycarbonate lens protects your optics from scratches and impact — making it ideal for tactical and outdoor environments.

The standout feature is its click-stop™ adjustable aperture, a patent-pending system that allows users to fine-tune light transmission and focus with ease. Simply rotate the turret to adjust from 23.5mm down to 1mm, with a tactile stop at 5.66mm for instant return to infinity focus. Whether you're operating under shifting lighting or sudden exposure, this system offers unmatched control and adaptability.

Features:

Durable 6061 T6 Aluminum Housing

Anodizing conforms to MIL-A-8625F Type II Class 1 and Class 2 Standard

Securely mounts to the objective lens to avoid accidental removal

Polycarbonate sacrificial lens for 92% light transmission

O-ring for keeping debris out

Adjustable Iris that goes from 1mm to 23.5mm

Sacrificial lens holder can accept aftermarket accessories for pvs-14 style lens such as LIF or sacrificial lenses with an outside diameter not exceeding 32.4mm

Will fit on any PVS-31 objective lenses