Search  for anything...
Meprolight

MEPROLIGHT MEPRO M21 Day and Night Self Illuminated 1X Fiber Optics and tritium Powered Reflex red dot with Bullseye, dot, Triangle and X reticles, Passive no batteris Glow on Reticle

    • Based on 414 reviews
Condition: New
Checking for product changes
$440.84 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Feb 27
Order within 14 hours and 7 minutes
Available payment plans shown during checkout

Style: Open X


Features

  • Dual illuminated 1X Red-Dot reflex sight. The MEPRO M21 provides instant, all-light aiming without batteries. Maintenance FREE! No batteries, No switches always on. Always ready. compatible with standard Picatinny rail.
  • Tritium and fiber-optic powered that uses ambient light when it's available during daylight, and unique Tritium light source system that ensure bright reticle in lowlight and night time. Transition between the two systems is instantaneous and automatic to assure good contrast between the aiming dot and the target area. Tritium luminance is warrantied for 10 years.
  • Large 30mm diameter lens with choice of 5 different amber color reticles. MOA or 5.5 MOA dot,Triangle, 4.3 Bullseye, and X. Large field of view for rapid target acquisition. Increases accuracy and speed when firing under pressure.
  • Rugged. Reliable in extreme weather conditions, Used by the Israel Defense Forces, militaries, and law enforcement agencies worldwide. The MEPRO M21 is suitable for Night Vision Goggles or scopes, including those with GEN III tubes and magnifying scopes, such as the Mepro MX3F/T .Easy positioning of Magnifier close to the sights optics with no decrease in the field-of-view and without compromising convenient switch operation
  • In the box: MEPRO M21 Reflex sight with quick release picatinny adapter/black dust cover/lens cleaning cloth/dust brush/user manual.

Brand: Meprolight


Color: Open X


Style: Open X


Product Dimensions: 4.48"L x 2.16"W x 2.75"H


Sport: Airsoft


Item Weight: 1.2 Pounds


Material: Aluminum


Magnification Maximum: 1


Objective Lens Diameter: 30 Millimeters


Magnification Minimum: 1 x


UPC: 879015004378 796793861811 669278967301


Global Trade Identification Number: 78


Manufacturer: Meprolight


Brand: Meprolight


Sport Type: Airsoft


Item Weight: 1.2 Pounds


Item Dimensions L x W x H: 4.48"L x 2.16"W x 2.75"H


Mounting Type: Picatinny Mount


Night vision: Yes


Eye Relief: 65 Millimeters


Magnification Minimum: 1 x


Compatible Devices: Picatinny Mount


Magnification Maximum: 1


Objective Lens Diameter: 30 Millimeters


Style Name: Open X


Color: Open X


Enclosure Material: Aluminum


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Feb 27

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great reflex sight, built like a tank, batteries not included! (or even necessary!)
Style: Triangle
I've only used this once, but so far I'm very impressed with it. The triangle reticle offers the quick pickup of a red dot for shorter distances, with the precision of a iron sight for longer distances. I zeroed it at 100 yards using the top tip of the triangle as the point of impact. In that regard, it reminds me of an old Mauser front sight, it works quite well. Shots can be quickly placed in a center-mass sized target at 50 yards or closer by using the whole triangle as a large red-dot. This sight is built like a brick schit-house, you would probably have to go to great lengths to damage it. It's nice to not have to worry about batteries since it runs on fiber-optic in the daylight and tritium in the dark. It's also nice not to have to turn it on or off, it's always "on". The one issue that often comes up when reading reviews about the M21 is reticle wash-out. If you're in a dark place (inside a dark room for instance) and you're aiming into a bright place (out the window of the dark room into the daylight) it can wash out, depending on how bright it is outside and how dark it is inside. This really isn't a problem for me, however. I shoot at an outdoor range that has a roof over the firing line. Shooting from the shade to the bright sunlight wasn't a problem at all, the reticle was bright and crisp. About the only bad things I can say about this sight are the slight possibility of reticle washout and it's weight, it is heavy at nearly a pound. But these aren't very big problems to me, I feel the positives far outweigh the negatives of this sight. This is a fantastic relfex sight for the AR platform, and would be right at home on many other tactical-type rifle platforms as well. ... show more
Reviewed in the United States on May 25, 2015 by Steve Fitzgerald
    • M21 vs Acog Reflex
Style: 4.3 Bullseye
Review Image by Joshua Douglas Joshua Douglas
Review Image by Joshua Douglas Joshua Douglas
Review Image by Joshua Douglas Joshua Douglas
Review Image by Joshua Douglas Joshua Douglas
Comparison of the two premier tritium powered 1x optics. I own both the Acog reflex and M21 now and I have to say it's a very tough choice which I would chose over the other. Main problem with both: Washout- these are powered with fiber optics and tritium. When it's dark, the tritium illuminates and reflects of the lens. When it is bright the fiber optics collect the light and then reflect it off the glass. So more light, a brighter reticle. Less light, a dimmer one. When shooting from a shaded or darker area, this is where the issue occurs. It is collecting little to no light and not producing a bright reticle. So if you were to aim the optic out to a brighter area, the reticle will disappear (washout). You are unable to see it and aim. Best at combating washout? Winner: Acog Reflex I own the bullseye model of the M21 and amber dot of the Acog. The color in the Acog is much richer and darker. The M21 is much lighter. In situations where the dot would wash out on the M21, the Acog was still visible. And if I took it to an extreme and pointed both at a light and covered the fiber optics up... Not an issue for the Acog ***main let down of M21*** No Polarizing Lens!!! The Acog comes with a lens that lets you adjust the opaqueness of the lens (like transitioning glasses). If it is bright out and you're shooting from a poorly lit area, you can use this lens to darken it and... You can clearly see the reticle. The fiber optics for the Acog sit at the front of it while the M21 is situated on top. So the type of light that you are shooting into will affect the reticle more on the Acog while the light your are shooting from will affect the M21 more. I have not been able to find a polaraizing lens for the M21. There is a washout remover that is available ( but requires batteries) which defeats the purpose of this type of optic. The lack of this lens is about enough for me to choose the Acog over the M21 even though I would say the M21 is superior in almost every other area. Build, feel, reticle, size, & bang for your buck. The M21 comes with a QD mount where you will have to spend another $100 for that on the Acog. The metal has a nice finish compared to the rougher texture on the Acog. The reticle type on the Bullseye model is great. Like if the Acog and Eotech had a baby. It's big and can be used for rapid acquisition where the amber dot Eotech will take some practice picking up quickly. Both are built like a tank and are in one solid piece. I do not doubt there ruggedness and would feel safe taking either one with me in the case of fall out. I have also had range time with the micro aimpoints (which are about $300 more) and would still chose either one of these over any red dot. Do. It for get both of these are still used today in combat and you won't go wrong with purchasing them. ***side note*** I also bought the MX3 magnifier that's goes with the M21. I would chose the Eotech G33 magnifier. The M21's lens has a teal hue that is ver pronounced with the use of a magnifier. ... show more
Reviewed in the United States on March 14, 2016 by Joshua Douglas Joshua Douglas
    • Excellent Sight
Style: Triangle
Review Image by HafuGuy HafuGuy
Review Image by HafuGuy HafuGuy
Review Image by HafuGuy HafuGuy
Review Image by HafuGuy HafuGuy
Haven't had a chance to try this unit out yet since I received it, but it seems to operate as well. The triangular reticule is much small than I thought and actually looks more like a dot. Nicely made, appears very sturdy since the body is mostly aluminum. Adapter works very well and makes taking this sight on and off very quick and easy. Will update as soon as possible. ** Aug 2013 ** OK, so I finally was able to test this sight our since I was able to acquire ammunition for my AR's (5.56 & 300 BLK). Keeping in mind that I am limited to an indoor range with a maximum 25 yard distance, I was very impressed with this sight. At that range, I was able to keep my shots clustered in a group of about 5" to 6" in diameter while rapid firing .... basically using a life size body shaped target, all rounds were kept dead center in the center of the torso where I had the triangle placed. My friend was impressed enough that he is thinking of buying on as well. Yes, there is a slight issue with washout when transitioning from a dimly lit to brightly lit area (for the target), but the triangle was still visible enough to allow me to keep 100% of my shots in the center mass of a human sized torso. ** Sept 2013 ** After working with this sight more on my various rifles & pistols, I have found it to be very accurate and has maintained zero perfectly when swapped between 5 different guns. Also it perfectly co-witnesses with my Troy Battle Sights. At nearly half the cost of a Trijicon SRS that I was considering, I plan to purchase several more for each of my rifles in the near future. My only gripes with this sight are: 1. No option to allow user to change reticle pattern or size 2. No option to change reticle color (reddish orange can be difficult to see on some surfaces) But that is all part of K.I.S.S. so have to make do with these limitations ... show more
Reviewed in the United States on July 3, 2013 by HafuGuy HafuGuy

Can't find a product?

Find it on Amazon first, then paste the link below.