The 3 Best M4 Optics [2020 Update]

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Not sure what optic to get for your M4?

Look no further.

I’ve tested ALL the best m4 optics (plus M4 optic mounts and accessories.)

By the end of this guide, you’ll find the perfect optic for your M4.

Let’s get started!

The 3 Best M4 Optics

If you’re pressed on time, here’s a quick list of the best m4 optics:

  1. Trijicon TR24 AccuPoint 1-4×24: Best Overall
  2. Trijicon ACOG 3.5×35: Best ACOG Scope
  3. Aimpoint PRO Red Dot: Best M4 Red Dot Optic

1. Trijicon TR24 AccuPoint 1-4×24: Best Overall

The Trijicon TR24 AccuPoint is the best available riflescope for big game hunts and short range shooting.

In fact:

I’ve personally bought and hand tested each feature to see if this claim was true.

Need the proof? Keep reading below to find it.

Glass Clarity and Reticle

As expected of a scope of this quality, the glass is excellent.

It’s fully multi-coated, and the glass is crystal clear with no signs of distortion. It excels at drawing in ambient light for a better picture while the anti-reflective glass ensures there is no glare that can alert your target.

The illuminated reticle uses no batteries, and is always on using the fiber-optic technology. The reticle adjusts to the amount of light available, so you won’t need to worry about making manual adjustments on the fly.

The reticle is solid and does a great job in keeping from being too busy. It’s a reticle that is ideal for fast target acquisition, which is perfect for hunters trying to tag a fast moving target.

Eye Relief and Eye Box

The eye relief is a generous 3.2” and is more than enough for this scope’s optimal range.

I also never experienced any eye fatigue even after several hours of use. There is no distortion and the glass is crystal clear, so it’s impossible to suffer from eye strain.

There were no issues with the eye box, and I was easily able to center the picture quickly.

The Trijicon TR24 AccuPoint, like several other Trijicon products, was designed around the Bindon Aiming Concept (BAC). This method was made for the user to aim with both of their eyes open.

This improves situational awareness, and makes rapidly switching targets or tracking a moving one far easier to accomplish.


The Trijicon AccuPoint was designed to be used in rugged terrain, and the durability reflects that.

During testing I dropped it, banged it around, and fully submerged it in water. The high levels of abuse didn’t even scuff the exterior of the scope, much less damage the interior. It also held my zero with no issues throughout the testing.

How was it able to come out undamaged?

It’s made from aircraft grade aluminum, and even cosmetic damage is hard to come by. It’s also waterproof and nitrogen purged, making it immune to any fogging issues.

Elevation and Windage Knobs

The turrets are excellent on the Trijicon AccuPoint, and give crisp audible clicks when they are being adjusted.

They can either come capped or with zero stop adjusters, but either way there’s no chance that they can be accidentally adjusted or knocked out of place.

The best part?

Finding my zero was incredibly easy and fast. It only took me 15 rounds, but it still held my zero after nearly 200.

Parallax and Magnification

The parallax is fixed, and it caused no issues even at maximum magnification.

The magnification is 1-4X. This makes the Trijicon AccuPoint highly effective at low to lower mid ranges. On top of the ability to quickly change targets, the proficiency at lower ranges makes it a perfect hunting scope.

The Bindon Aiming Concept couples well with the magnification, making it an easy task to rapidly switch targets and land concise and accurate shots.

Mounting and Rings

The Trijicon TR24 AccuPoint does not come with any mounting or rings.

The Trijicon RM65 RMR Mount is the best way to mount your scope. It’s an additional $120, but getting a quality mount is the only way to get the most out of your scope.

Is the Trijicon TR24 AccuPoint 1-4X24 worth it?

If you’re looking for a hunting scope that can handle any type of environment while giving a crystal clear picture and rapid target acquisition, then look no further than the Trijicon TR24 AccuPoint.

Here’s why:

  • Great turrets
  • Extreme durability
  • Crystal clear multi-coated glass
  • Perfect reticle for rapid target acquisition

To sum it up: the quality of features that the Trijicon AccuPoint boasts puts other hunting scopes to shame.

The price is very reasonable for the quality received. The glass, durability, and turrets all combine into a top notch scope.

It may take some getting used to shooting with the BAC style, but not many other scopes allow that type of style and it really pays off with this one. It was built around it and this form of shooting is incredibly efficient for hunting.

So if you need a great hunting scope that can perform perfectly in even the harshest conditions, then look no further than the Trijicon TR24 AccuPoint 1-4X24.

2. Trijicon ACOG 3.5×35: Best ACOG Scope

Advanced Combat Optical Gunsights are the top choice when it comes to mid-range shooting and the Trijicon ACOG 3.5×35 is the best ACOG scope around.

In fact, this scope is used by law enforcement and military and is combat tested.

I’ve tried many different scopes and this Trijicon ACOG has quickly made its way to the top of my list.

Want to know why? Keep reading…

Glass Clarity & Reticle

Trijicon ACOGs are all made with superior glass quality and the 3.5×35 is top of the line.

With tritium/fiber optic illumination, you get a crystal clear sight picture in almost any light condition. Plus, it adjusts the illumination automatically based on the surrounding light. And, it’s all completely battery free, so you’ll never have to worry about the illumination going out when you need it most.

I chose the green crosshair 5.56 reticle and I’m glad I did. It’s made specifically for the AR-15. It has green crosshairs that are easy to see at night and it looks like a standard black reticle during the day. On top of that, it allows for bullet drop compensation for the 5.56 out to about 1100 yards.

Eye Relief & Eye Box

Eye relief is a little tight with this scope at 2.4 inches.

However, this seems to be plenty as long as you’ve got a good cheek weld and position. Plus, the 3.5×35 has the longest eye relief I could find in an ACOG.

Plus, you can get a little extra eye relief and comfort if you purchase the Trijicon eyepiece for your scope.

Trijicon ACOG Scope Model Rubber Eyepiece
  • Package length: 13.004 cm
  • Package width: 7.62 cm
  • Package height: 5.588 cm

While the ACOG is known for its medium range superiority, it does well in close quarters combat too. That’s because this scope uses the Bindon Aiming Concept.

This means you can have both eyes open when you shoot, which offsets some of the issues with eye relief and makes for super fast target acquisition. And, you get the full use of your peripheral vision for ultimate situational awareness.


The Trijicon ACOG 3.5×35 was built to last, maybe even longer than you will!

It’s housed in aircraft quality aluminum that’s rugged and durable. I’ve banged mine against my truck and dropped it a few times. There’s not a mark on the scope!

This scope is also waterproof and fogproof, thanks to the dry nitrogen that fills it. It’s also shockproof and can stand up to the recoil of any rifle it’s mounted to.

You’ll also get a limited lifetime warranty from Trijicon. It covers pretty much everything but the tritium/fiber optics and that should last close to 15 years on average.

Elevation & Windage Knobs

The elevation and windage knobs use a tactical MOA adjustment with a maximum MOA of 40.

The turrets are easy to adjust and are about ⅓ MOA per click. ACOGs have an internal prism housing that adjusts, which makes the scope even more durable, since there’s nothing external moving.

What about zeroing?

Zeroing this Trijicon ACOG was a breeze! It only took about 15 minutes and at that point I was shooting holes through holes.

I’ve had it for a few years now and it’s definitely the scope that I use the most. So far, I’ve never had to readjust it, so the zero seems to be holding well.

Parallax & Magnification

As it says in the name, the Trijicon ACOG 3.5×35 has a magnification of 3.5x.

This is the perfect power for medium range distances around 100-200 yards. It even does pretty well at 50 yards, which is amazing given that I’d normally use a 1x for that distance. I’ve also been able to make pretty accurate shots out to 300 yards without a problem.

The total amount of accurate range that you get with this magnification is pretty much the perfect sweet spot for all around shooting.

Plus, it’s parallax free! Well, nothing is completely parallax free, but this is as close as it gets. I’ve noticed a tiny bit of distortion side to side if I don’t have a good cheek weld, but it’s negligible.

Mounting & Rings

It comes with a flat top adapter that fits military style rails, so it’s easy to mount on any AR-15 style rifle.

You’ll also get a scopecoat and a large pelican case with your scope.

If you’re going to be using the scope primarily for hunting, this Trijicon killflash is a good purchase because it reduces glare so you don’t give away your position.

Is the Trijicon ACOG 3.5×35 worth it?

If you’re looking for the best rifle scope on the market, look no further than this scope.

It has:

  • Rugged durability
  • Crystal clear glass
  • Visibility day or night
  • Fast target acquisition
  • Green crosshair reticle
  • Battery free illumination
  • Short-medium range accuracy

The Trijicon ACOG 3.5×35 is well worth the cost. If you want the best of the best, try this scope. You won’t be disappointed.

Trijicon ACOG 3.5x35 Riflescopes
  • ACOG 3.5x35 scope with Green Horseshoe BAC Reticle and Target Reference System is calibrated for 5.56 (.223 cal) flat-top rifles to 1000 meters Includes flat top adapter
  • Daytime illumination is provided by fiber optics
  • With TA51 Mount

3. Aimpoint PRO Red Dot: Best M4 Red Dot Optic

I’m going to start off by saying the Aimpoint Pro Red Dot sight is one of the best reflex scopes.

For the price, this guy could be number one. In fact, once I put this red dot on my AR, I haven’t changed back.

Wondering how that’s the case? Keep on reading…

Glass Clarity & Reticle

The glass for the Aimpoint is great. The lens is multi-coated so scratching is not likely to happen.

The red illumination with the dot is great. I did notice some distortion at the highest setting, but it was manageable.

The reticle is a MOA so it registers distances in yards and inches.

The ability to aim with this scope is off the charts. It’s so quick to just look through the clear glass and it’s already on target.

If you’re on the lookout for similar scopes, check out this link.

Eye Relief And Eye Box

The eye relief is incredible. There is nowhere you look that isn’t normal vision.

The eye box is rather large and shows a great field of vision with clear images.


This guy is a beast in durability. I have yet to see damage after accidentally dropping it a couple times.

Not only that, but it is waterproof and can be in some pretty extreme temperatures.

The reason for these nice features is from the high grade aluminum.

Elevation And Windage Knobs

Elevation and windage knobs are easy to manipulate and are accurate.

The only issue I have with the knobs is that they are backwards. Moving up and down moves the sights right and left and visa versa.

Once you get over this hump, adjustments can be made quickly and accurately.

Once I got the adjustments I needed, the target held zero with relative ease. I was able to adjust my dot over the target quickly and it held true for several rounds.

Parallax And Magnification

For parallax and magnification there is no problem. It doesn’t magnify so there is no blurring around the target when moving your head.

This is a quick aim and shoot type of scope so once elevations are checked it’s locked and loaded.

If perhaps you need a mid to long range scope, check this list and find one that suits you.


This scope comes with a handy mount. I didn’t bother buying any other accessory because this is actually one of my favorite things about the scope.

The only drawback to the mount is that the knob is rather large. However, it holds strong to my barrel and no amount of shooting has loosened it yet.

Not only does the Aimpoint come with a mount, but flip caps protect both ends of the scope. Unless they snap off someday, I highly doubt I’ll need other ones.

Is the Aimpoint PRO Red Dot Worth It?

This scope is definitely for anyone interested in short distances. It’s quick and easy target finding makes for an exciting time at the range.

Here are a few reasons why:

  • Great Clarity
  • Easy Installation
  • Weatherproofing
  • Fantastic Durability
  • Rapid Target Finding

If this doesn’t convince you, perhaps the 10 year warranty will.

So if you’re on the lookout for a nice red dot scope, try out the Aimpoint PRO Red Dot. It’ll be worth every penny.

Aimpoint PRO Red Dot Reflex Sight with QRP2 Mount and Spacer - 2 MOA - 12841
  • Designed to deliver premium performance under harsh conditions
  • 2 MOA dot with 4 Night and 6 Daylight brightness settings
  • Up to 3 years of continuous operation using one DL1/3N battery (included)

Now It’s Your Turn

I hope you enjoyed my best m4 optics guide.

Now I want to turn it over to you:

Which optic will you pick for your M4?

Let me know by leaving a quick comment down below.

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