It’s 20mm, but can squeeze on something like 21 or 22mm, hope this helped

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RDS-25 Red Dot Sight 4 MOA Red Dot Gun Sight Rifle Scope with 1 inch Riser Mount

RDS-25 Red Dot Sight 4 MOA Red Dot Gun Sight Rifle Scope with 1 inch Riser Mount

Q: How far does the red dot show

It doesn't show distance, just a dot in centre of scope to aquire targets. Scope has no magnification. Just a simple red dot

Q: Does anyone know of a sight protector that goes right over it while on its mount?

A sight protector on a different mount of the same height :)

Q: Is it suitable for 12ga shotgun?..

Not entirely sure as I believe its rated to either 7.62 or 5.56, not sure how it would handle the recoil and still hold zero

Product ID: 255374904

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Details

Brand
Feyachi
Colour
Black
Style
RDS-25
Product dimensions
9.9L x 7.9W x
Sport
Airsoft
Item weight
118 Grams

🎯4 MOA precision red dot

⚙️11 brightness levels

🛡️Shockproof, waterproof aluminum

Frequently Bought Together

Feyachi RDS-25 Red Dot Sight 4 MOA Red Dot Gun Sight Rifle Scope with 1 inch Riser Mount

RALSPEC Airsoft Sight Scope Lens Protector Guard Red Dot Optic Holographic ACOG BB Shield Fits 20mm Weaver Picatinny Rail

SBGJMY AFG1 AFG2 Angled Foregrip,Front Grip for 20mm Picatinny Rail System Non-slip Triangle Front Grip

Description

🎯 Lock on. Level up your aim with unstoppable precision.

BUILT TO ENDURE - Rugged aluminum body is shockproof, nitrogen-purged, and fully waterproof for relentless performance.
COMPACT TACTICAL - Ultra-compact design fits effortlessly on shotguns and rifles, ideal for hunting and tactical use.
DUAL MOUNT FLEXIBILITY - Choose between low or lower 1/3 co-witness mounts for perfect alignment on any platform.
PINPOINT ACCURACY EVERY TIME - 4 MOA red dot ensures rapid target acquisition with laser-sharp precision.
CUSTOMIZABLE BRIGHTNESS CONTROL - 11 adjustable intensity settings adapt seamlessly to any lighting environment.

The Feyachi RDS-25 Red Dot Sight features a 4 MOA red dot with 11 brightness levels, housed in a shockproof, waterproof aluminum body. It offers two height mount options for versatile platform compatibility, making it a compact, durable optic perfect for hunting, tactical, and precision shooting scenarios.

Specifications

Color	Black
Size	S
Style	RDS-25
Compatible with	Shotgun
Material type	Aluminium
Number of items	1
Sport	Airsoft
Included components	1 x Allen Wrench, 1 x CR2032 Battery, 1 x Feyachi Red Dot Sight, 1 x Instruction, 1 x Lens Cloth, 1 x Mini Straight Screwdriver, 1 x Riser Mount, 1 x Rubber Bikini Cover
Batteries included?	Yes
Brand	Feyachi
Department	Unisex
Manufacturer	Feyachi
Item model number	1125
Product Dimensions	6.86 x 5.08 x 4.06 cm; 118 g
ASIN	B08NWZ4MPD

Have a Question? See What Others Asked

Rail size

How far does the red dot show

Does anyone know of a sight protector that goes right over it while on its mount?

Is it suitable for 12ga shotgun?..

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