Feyachi M40 3X Red Dot Magnifier - Flip to Side Mount, Focus Adjustment, Windage and Elevation, 37/40mm Height

Overview

The Feyachi M40 3X Red Dot Magnifier is a compact upgrade that adds reliable magnification to a standard red dot sight. It delivers a true 3x boost while preserving an expansive field of view and a comfortable eye relief of 2.4 inches, helping you keep both target detail and situational awareness in view.

Sharp optics you can trust

Fully multicoated clear glass enhances light transmission, producing bright images with crisp edges, faithful color, and a consistent view across lighting conditions. The result is a clearer, more confident sight picture when you are tracking moving targets or scanning for details at distance.

• 3x magnification with an expansive field of view that supports quick target recognition
• 2.4 inches eye relief reduces eye strain during rapid target transitions
• Fully multicoated glass for bright, sharp sight pictures and color fidelity
• Push-button quick-release mount with secure flip-to-side engagement
• Lower 1/3 co-witness spacer for precise alignment with red dot sights
• Adjustable eyepiece for fast, sharp focus
• Windage and elevation adjustments for centered reticle alignment
• Machined aluminum body with nitrogen purge for reliable performance
• Waterproof, fog-proof, and shockproof construction for field use

Easy mounting and quick transitions

The quick-release mount locks securely with a push-button. The included lower 1/3 co-witness spacer lets you align with your red dot for rapid reacquisition, while the flip-to-side feature lets you move the magnifier out of the way when magnification is not needed.

Focus, alignment, and accuracy

The adjustable eyepiece provides fast focus so the image remains sharp as your distance or lighting changes. Windage and elevation adjustments help you center your sight picture and maintain consistent aiming.

Durability for field use

Constructed from machined aluminum and anodized, the M40 is nitrogen-purged to resist moisture and fog. This design offers waterproof, fog-proof, and shockproof performance in varied weather and rugged handling.

Real-world use cases

In dynamic range sessions, you can spot targets quickly and reacquire them with precision. For hunting, the magnifier reveals mid-range details. For home defense or competition, the setup supports adaptable sighting across scenarios.

Notes on expectations

The described benefits reflect the features of the M40 and are possible outcomes dependent on conditions and user technique. Individual results may vary.

What you get

• Feyachi M40 3X magnifier
• Lower 1/3 co-witness spacer
• User manual