PVS31 NVG Protection Lens Cover, Adjustable Iris Light Shield, O-Ring Debris Seal, 6061-T6 Aluminum, Fits GPNVG (38mm) & PVS-31 Night Vision Device (31mm/32mm Objective Lens OD)

Features: 6061 T6 Aluminum Housing 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 Note: 1.There May Be An Error Of 1~2mm, Please Refer To The Actual Product. Due To Manual Measurement. 2.Please Refer To The Actual Product. Due To Different Shooting Angles, Different Lights, And Different Screen Displays, There May Be Some Color Differences.

• Crafted from high-strength 6061-T6 aluminum, this lens cap withstands harsh field conditions with impact resistance. Built-in O-ring seal creates a dustproof, waterproof barrier, safeguarding 31mm-38mm objective lenses of night vision devices (PVS-31, GPNVG, etc.) for long-lasting use in outdoor and complex scenarios.
• Unlike traditional friction caps, it threads directly onto the objective lens for a tight, slip-proof connection—prevents accidental dislodgement during use. Precisely matches PVS-31 series lens threads for easy installation/removal, ideal for high-intensity activities or sudden movements.
• Rotate the turret to switch apertures freely (1mm-23.5mm), adapting flexibly from low to bright light environments. Built-in 5.66mm tactile stop enables quick reset to infinity focus without recalibration, enhancing nighttime operation efficiency.
• Includes a polycarbonate sacrificial lens with 92% light transmission—shields the objective lens from scratches and impacts while ensuring sharp, distortion-free images. Lenses are individually replaceable, reducing maintenance costs for long-term use.
• Fits PVS-31, GPNVG, and other night vision devices with 31mm-38mm objective lens OD. Compatible with third-party PVS-14 style accessories (e.g., LIF lenses, sacrificial lenses) and supports attachments with OD ≤32.4mm. Universal design requires no modifications for easy integration.