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Meprolight M21 Day and Night Reflex Sight, Self-Powered Dot Sight with Tritium, Fiber Optics, No Batteries Required, Made in Israel

Meprolight M21 Day and Night Reflex Sight, Self-Powered Dot Sight with Tritium, Fiber Optics, No Batteries Required, Made in Israel

Q: Is there an ard (anti-radiation device, i.e. killflash) available for this?

The kill flash (ARD) is not included in the box unless it specifically states it is.

Q: I ordered one of your sites and my question is this, am I supposed to be seeing double triangles? No matter what time of day it is?

Absolutely not. Make sure that your line of sight is inline with the scope and not shifted to a side. Also do not focus on the triangle, focus on the target itself. If that doesn't work the sight could simply be defective. Don't get discouraged with the product, when functioning properly it is hands down one of the best out there. Hope this helps.. Michael

Q: For the dot-in-circle reticle, my understanding is that the circle is 5 moa. what is the dot size in moa?

I believe the thick outer ring of the bullseye circle is 15moa, with the inner dot being 4.5moa.

Q: How long does the tritium last and is it replaceable? If so, how much does that cost?

Mepro claims 12 years but in my experience you can expect 9 to 10 years of life from the tritium vial. Yes, you can send it in to Mepro for replacement. I can't tell you how much it costs or what turnaround time is though.If you buy this optic get the 4.3 MOA dot. Don't get any of the other reticles. They are too big.

Product ID: 2353509

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Details

Brand
Meprolight
Color
4.3 Bullseye
Style
4.3 Bullseye
Sport
Hunting
Item Weight
13.6 ounces
Material
Aluminum

🌗Day & night illumination with fiber optics & tritium

🔋No batteries needed - self-powered

🛡️MIL-STD-810 durability for extreme conditions

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Description

🎯 Lock in your target, day or night—always ready, always lethal.

WIDE FIELD OF VIEW - 30mm lens offers expansive sight picture for rapid target acquisition up to 300 meters.
ALWAYS ON PRECISION - Self-powered illumination means zero downtime—never miss a shot.
NIGHT VISION COMPATIBLE - Fully integrates with night vision devices and magnifiers to extend your tactical edge.
BATTLE TESTED DURABILITY - Built to MIL-STD-810 standards, engineered to perform in the harshest environments.
SEAMLESS DAY TO NIGHT TRANSITION - Automatically adapts from bright fiber-optic daylight to tritium night glow for flawless targeting 24/7.

The Meprolight M21 is a self-powered reflex sight combining fiber-optic and tritium illumination for reliable day and night use without batteries. Engineered in Israel to meet MIL-STD-810 durability standards, it features a 30mm lens with a single-dot reticle, compatible with Picatinny mounts and night vision devices, delivering precision targeting up to 300 meters with unmatched reliability.

Specifications

Brand	Meprolight
Color	4.3 Bullseye
Style	4.3 Bullseye
Sport	Hunting
Item Weight	13.6 ounces
Material	Aluminum
Magnification Maximum	1.0
Objective Lens Diameter	30 Millimeters
Magnification Minimum	1 x
Compatible Devices	Picatinny Mount
Mounting Type	Picatinny Mount
Night vision	Yes
Model Name	Mepro M21 Bullseye
Manufacturer	Meprolight
Reticle Type	Single Dot
UPC	646791386970 646819989749 879015002787 642213624026 669439365434 787766500745 840103140087
Global Trade Identification Number	00879015002787
Item Package Dimensions L x W x H	5.75 x 5.67 x 3.78 inches
Package Weight	0.7 Kilograms
Item Dimensions LxWxH	4.5 x 2 x 2.75 inches
Brand Name	Meprolight
Country of Origin	Israel
Warranty Description	5 years for material and workmanship, 10 years for tritium luminance
Suggested Users	unisex-adult
Number of Items	1
Part Number	Mepro M21-B
Included Components	Mepro M21

Have a Question? See What Others Asked

Is there an ard (anti-radiation device, i.e. killflash) available for this?

I ordered one of your sites and my question is this, am I supposed to be seeing double triangles? No matter what time of day it is?

For the dot-in-circle reticle, my understanding is that the circle is 5 moa. what is the dot size in moa?

How long does the tritium last and is it replaceable? If so, how much does that cost?

Common Questions

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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