Descriptions: 
- PVS-31 Lens Cover – Rugged Protection & Precision Focus for Night Vision Devices
- The PVS 31 Lens Cover is purpose-built to protect and enhance the performance of night vision devices. Engineered from rugged 6061-T6 aluminum,Durable.
- 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 adjustable aperture,focus with ease. 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 23mm

Base information:
- Type: NVG Lens Cover
- Color: Black
- Material: Metal
- Function: Adjustable / Focusing 
- Fits For PVS31

Package included：1x Night Vision Night vision equipment lens cap