Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Meprolight AR15/M16 4 Dot Peep Rear Night Sights
As Low As $57.99 Save Up to 28%
View Product
Compare (0)
Most Helpful Positive Review Helps Target Acquisition in Extreme Low Light
This peep sight installs normally on an AR15 rear sight and provides what can best be described as a fuzzy rear halo. The rear sight only aids in aiming when used in tandem with the tritium front sight and when your eyes have fully adjusted to the dark. I could see this night rear peep sight being u...
Read More...
Most Helpful Negative Review MEPROLIGHT AR15/M16 NIGHT SIGHT SYSTEM
I PURCHASED THE MEPROLIGHT MODEL ML-31619F.S NIGHT SIGHT SYSTEM FOR AR15AND AR CLONES RIFLES A FEW WEEKS AGO AND INSTALLED IT OVER THIS WEEKEND SPECIFICALLY FOLLOWING THE INCLUDED INSTRUCTIONS AND USING THE PROPER SIGHT ADJUSTMENT/INSTALL TOOL AND PROCEEDED TO THE RANGE TO PERFORM SIGHT ADJUSTMENTS,...
Read More...
Show
Sort by
Filter by

Exactly what I was looking for!

by Josh, Verified Owner from GA, United States Written on May 8, 2025
I have a cheaper set of fixed offset standard iron sights from Ozark Armament on my scoped rifle. I replaced the front post with a TruGlo TG-H3 front sight post. The TG-H3 is bright and always visible. Wanted something on the rear aperture to line up with but wasn't willing to spend $300+ on Troy or similar when for that price I could almost get a Holosun 507.

This was the perfect solution for a fraction of the price. The dots are definitely on the dimmer side, as other reviews have mentioned. It's noticeably dimmer than my TG-H3 front post sight, but it actually works really well to line up the shot. They are just bright enough to see in order to line up 4 the hazy dots against the contrast of the brighter front dot. The night sights on my stock P365 are exactly the same way and work great.

All together, I think I spent $40 on the fixed offset sights, $40 on the TG-H3, and $70 on the Meprolight rear aperture. So ~$150 for "Troy clone". Disclaimer: I have never actually looked through as et of Troys, so maybe they are worth the extra coin, but for me this setup was exactly what I was looking for for less than half the price I would have spent.
Pros:
  • fit in place of standard rear aperture
  • dimness gives excellent contrast w/ front dot
Cons:
  • a little dim
Best Used for:
  • low light or night scenarios
  • in combination with something like a TG-H3
Would recommend: Yes
Was it helpful to you? Yes | No

exactly what I wanted

by john, Verified Owner from TN, United States Written on September 28, 2024
I was unsure what to expect based on some of the reviews, but this rear peep sight is awesome, it glows just the right amount. The dots give you a blur as a peep sight would, letting you focus on the front post looking through the four blurry rear dots. I paired it with a different brand tritium front sight. Really glad I found a good iron sight nighttime solution. I think the people that have this a bad review are not familiar with how bright tritium is. If this were any brighter it would not be good because it's the rear sight you only want a dim glow right in your eye.
Best Used for:
  • Nighttime discrete use
Would recommend: Yes
Was it helpful to you? Yes | No

Meprolight

by Sg, Verified Owner from NM, United States Written on February 7, 2024
Works and fits great! Inserts are a little dim, but still help greatly.
Would recommend: Yes
Was it helpful to you? Yes | No

Meprolight Tru-Dot

by Sg, Verified Owner from NM, United States Written on January 31, 2024
Works great. A little dim, but gives the contrast needed to help get sight picture in lower light
Pros:
  • Good fit
Cons:
  • A bit dim
Would recommend: Yes
Was it helpful to you? Yes | No

Not Usable @ Dusk or Dawn !

by Paul Black, Verified Owner from OH, United States Written on October 20, 2023
Not bright enough for dusk or dawn usage. Only can be seen in total darkness. I do not recommend this for any military or service personnel. I unfortunately mounted it before checking its validity so no returns.
Pros:
  • Fits in standard A2 aperture
Cons:
  • Not worth the price
Best Used for:
  • Daylight usage
Would recommend: No
Was it helpful to you? Yes | No

Way Better Than Trijicon!

by Matt, from VA, United States Written on November 4, 2022
The rear aperture glow is WAY better than the Trijicon model. The Trijicon rear apature does not glow at all, none, zero. This sight is PERFECT. I also like the 4-dot design a lot. I have zero compliments and zero regrets. Good product!
Pros:
  • Good Glow
Cons:
  • none so far
Best Used for:
  • A sight that works.
  • A replacement for Trijicon apature
Would recommend: Yes
Was it helpful to you? Yes | No

AR-15 -M16 Four Dot Rear Peep Sight

by Wannabe, from ID, United States Written on October 24, 2022
Hello There, Optics Planet, Thank You For Reading This. A Fantastic Product. To Me Dot's Need To Be Brighter. Other Then That, No Complaints. Works Very Well. Very Pleased, With It. Thank You For Your Time. May You, And All Your Employees, Be Safe, And Stay Healthy. Have A Groovy Week.
Pros:
  • Easy To Get On Target.
Cons:
  • To Me Dot's Could Be Brighter
  • To Me The Dot' Could To Be Brighter.
Best Used for:
  • I Live Near Some Rancher's, And They Use Me To Solve Some, Of There Predator's, Problem
Would recommend: Yes
Was it helpful to you? Yes | No

Good choice for dark/low light aiming

by Rob the independent semi-liberal moderate, Verified Owner from WI, United States Written on August 8, 2022
The 4 tritium dots have a gentle glow that isn't noticeable in daylight or even typical indoor lighting. In deep shade to complete darkness, the glow of the rear dots blurs a bit, but is still visible, allowing fast alignment with a tritium or phosphorescent front sight post.

While not as easy of a sight picture as a red dot or other illuminated optic, don't need to be turned on, can't turn off, and can't accidentally be turned up bright enough to affect one's low light vision.

I installed this rear sight on a Midwest Industries fixed rear sight on a .458 Socom AR pistol for backcountry adventures in grizzly country. It was part of keeping that build under 4.5 lbs.
Pros:
  • always on
  • no batteries
  • Not too bright
  • self powered
Cons:
  • illumination lasts only 12 years
Best Used for:
  • Low light
  • Darkness
  • SHTF AR-15
Would recommend: Yes
Was it helpful to you? Yes | No

OK however...

by John, Verified Owner from LA, United States Written on June 20, 2021
Ordered the 4 dot for a home defense carbine build and either it was old stock or maybe the way all the 4 dots are but for the one received the performance was lacking. It was however better than nothing in the dark. The lesser expensive 2 dot version was installed and made sighting clearer and quicker. The 4 dot may work for some people but it just did not work that well for me in the dark. Had the dots been brighter there would be no issues as the sight part appears well made.
Best Used for:
  • Home Defense
Would recommend: Yes
Was it helpful to you? Yes | No

Do not buy

by Son of Karen, from IN, United States Written on April 13, 2021
I installed it and loved it. A week later one of the four dots on the rear aperture no longer illuminated. I’ll follow up with the company and see if they will send another rear aperture, but not a good first impression. I would recommend opticsplanet take the product off the site in the meantime.
Would recommend: No
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?