Nite Site 25mm Scope Clamp

Product Description

The Nite Site 25mm Scope Clamp is a replacement or spare clamp designed to attach Nite Site night vision units to riflescopes with a 25mm objective bell diameter. This clamp allows you to mount the Nite Site system forward of your existing daytime optic, converting it for night use without removing the scope.

Nite Site systems work by projecting an illuminated image into your existing scope. The clamp holds the night vision unit in position ahead of the objective lens. This setup lets you keep your zero and use the same reticle at night that you use during the day.

The 25mm clamp is sized for riflescopes with a 25mm objective diameter. Verify your scope’s objective measurement before ordering to ensure proper fit.

Key Facts

• Product Name: Nite Site 25mm Scope Clamp
• SKU: NITESITE25MMSCOPECLAMP
• Compatibility: Riflescopes with 25mm objective bell diameter
• Function: Mounts Nite Site night vision units to compatible scopes

How the Nite Site Clamp System Works

A Nite Site clamp wraps around your riflescope’s objective bell and provides a mounting platform for the Nite Site main unit. The clamp must match your scope’s objective diameter for a secure, vibration-free fit. Common objective diameters range from 25mm on compact scopes up to 56mm or larger on full-size hunting optics.

Measure your scope’s objective bell with calipers if you are unsure of the size. The objective is the front lens element, and its housing diameter determines which clamp you need. Using the wrong size clamp will result in either a loose fit or an inability to close the clamp fully.

Replacement and Spare Clamps

Many shooters keep spare clamps on hand when they run multiple rifles or switch scopes between firearms. A spare clamp lets you leave one installed on each scope, so you can move the Nite Site main unit between rifles without tools or re-zeroing.

Clamps can also wear over time or be lost in the field. Having a replacement available keeps your night vision system operational. Browse our full selection of scope rings and mounts if you need other mounting solutions.

What to Confirm Before Ordering

The critical measurement is your riflescope’s objective bell diameter. This is not the same as the objective lens diameter listed in scope specifications like “3-9×40” — that number refers to the lens element, not the housing. The housing is typically a few millimeters larger.

If you need help determining the correct clamp size or have questions about Nite Site compatibility with your specific optic, send us a message. We can walk you through the measurement process and confirm fitment.

Ordering from Western Sport

Order online and it ships straight to your door. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: Will the Nite Site 25mm clamp fit my riflescope?

A: The Nite Site 25mm clamp fits riflescopes with a 25mm objective bell diameter. Measure the outer diameter of your scope’s objective housing with calipers to confirm. If your scope has a different objective diameter, you will need a clamp sized to match that measurement.

Q: Can I use one clamp on multiple scopes?

A: You can move a single clamp between scopes if they all have 25mm objective bells, but most shooters find it easier to keep a clamp installed on each scope. That way you only move the Nite Site main unit, not the clamp itself, when switching rifles.

Q: How do I know what size objective bell my scope has?

A: Use calipers to measure the outside diameter of the scope’s front lens housing. The magnification and objective lens spec printed on the scope (such as 3-9×40) refers to the glass diameter, not the housing. The housing is typically a few millimeters larger than the lens specification.

Q: Is this clamp a replacement part or does it work as a standalone mount?

A: This clamp is designed to work with a Nite Site night vision unit. It provides the attachment point between your riflescope and the Nite Site main body. It is not a standalone scope mount or ring set.