Feyachi M40 3X Red Dot Magnifier with Flip to Side Mount, Focus Adjustment, Windage and Elevation Adjustable, 37/40MM Height, Black

£133.20 (as of 10/20/2026 07:27 PST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Feyachi M40 is a 3X red dot magnifier with a flip to side mount, focus adjustment, and windage and elevation adjustment. It is aimed at buyers who want a clearer view through a compatible red dot setup and the option to move the magnifier aside when not needed. Check your current sight setup and selected variation before ordering.

SKU: B0BZKL79PD Category:

Quick Summary

The Feyachi M40 3X Red Dot Magnifier is designed to add 3X variable magnification to a standard red dot sight. It includes a flip to side mount, focus adjustment, and windage and elevation adjustment for centring the view. The description also notes a comfortable 2.4 inches eye relief and a lower 1/3 co witness spacer.

Who It Is Best For

This is suited to buyers who want a magnifier for a red dot sight and need a setup that can be flipped aside when not in use. It may suit users looking for a clearer sight picture, easy focus adjustment, and a mount described as compatible with Absolute and lower 1/3 co witness red dot scope setups.

What To Know Before You Buy

The key points are the 3X magnification, flip to side mounting, and adjustable eyepiece for sharper viewing. The product is described as black and as having 37/40MM height. Check the selected variation and your existing sight setup before ordering.

Pros: Offers 3X magnification, flip to side convenience, and adjustable focus and centring.

Cons: You should check compatibility with your current red dot setup before ordering.

Common Buyer Questions

What does this magnifier do?
It adds 3X variable magnification to a standard red dot sight.

Does it flip out of the way?
Yes, it uses a flip to side mount for quick engagement and disengagement.

Can the image be adjusted for focus?
Yes, the eyepiece is adjustable for fast focus.

Can the view be centred?
Yes, windage and elevation adjustment are included for optimum view centring.

What kind of sight setup is it meant for?
It is described as working with Absolute and lower 1/3 co witness red dot scope setups.

Key Details

DetailWhat it means in use
BrandFeyachi
ModelM40
Magnification3X variable magnification
Mount typeFlip to side mount with quick release
Eye relief2.4 inches eye relief
AdjustmentFocus, windage, and elevation adjustment
Fit descriptionWorks with Absolute and lower 1/3 co witness red dot scope setups
ColourBlack
Height37/40MM height

Final Buying View

The Feyachi M40 is a practical red dot magnifier for buyers who want 3X viewing with a flip to side mount and adjustable focus. It includes centring adjustment and a lower 1/3 co witness spacer, making it a straightforward option for compatible setups. If you want a magnifier for your current red dot sight, it is worth checking your mount and height needs before ordering.

Brand

Feyachi

Manufacturer

Feyachi

Binding

Sports

Product Group

Sports

EAN

0734038983584

UPC

734038983584

Part Number

M40

Model

M40

Warranty

2 year manufacturer

Color

Black

Product Dimensions

2.85 x 1.46 x 1.66 inches

Item Weight

0.66 pounds

Size

One Size

Number Of Items

1

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