- - Provides adapter function, adjustable size M30 - M37, 1.5 - 26 mm aperture, allows different sizes of filters to be installed on the lens, increases the applicability and flexibility of the lens, and reduces the purchase cost.
- - Provides precise aperture adjustment control to control the amount of light entering, suitable for PVS14 monocular night vision equipment and PVS14 binocular night vision equipment, as well as other 30mm caliber equipment.
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