Extended Diopter Lens Tube for NightCrystal M6/M5/M4/M3 Night Vision Scopes – Long Metal Eyepiece Extension for Farsighted Hunters

Extended Diopter Tube for Better Vision and Comfort

This extended metal diopter tube is designed specifically for NightCrystal M6, M5, M4, and M3 night vision scopes. It replaces the original metal sleeve on the adjustable diopter eyepiece and increases the adjustment range, making it much easier for users with high farsightedness (hyperopia) to achieve a clear image.

With the standard tube, the eyepiece adjustment range is 6 cm to 7.5 cm. After installing this extension tube, the adjustment range becomes 8.5 cm to 10 cm, providing additional focusing distance that many farsighted users need.

Perfect for Farsighted Hunters

Many hunters who wear reading glasses struggle to see the screen clearly when using a night vision scope. Wearing glasses while hunting can be inconvenient and slow down target acquisition.

This extended tube solves the problem by allowing the eyepiece to move further away, helping farsighted users focus naturally without needing reading glasses.

Clear Viewing for Better Hunting Performance

A clear screen is critical when hunting at night. This extension tube helps users achieve sharper focus, better visual comfort, and reduced eye strain, especially during long observation sessions.

Durable Metal Construction

The tube is made from high-quality metal, ensuring durability and precise fit with the NightCrystal diopter assembly. Installation is simple and only requires replacing the original sleeve.

Compatibility

Compatible with the following NightCrystal night vision scopes:

• NightCrystal M6

• NightCrystal M5

• NightCrystal M4

• NightCrystal M3

Key Benefits

• Extends diopter adjustment range from 6–7.5 cm to 8.5–10 cm
• Designed for farsighted (hyperopic) users
• Allows clear viewing without reading glasses
• Improves visual comfort and focus clarity
• Durable metal construction
• Easy replacement for the original eyepiece sleeve
• Perfect accessory for serious hunters and night observation