5 Best Scope for AR15 M4 / Best Scopes for M4

Are you on the hunt for the best scope for AR15 M4? If yes, you are in the right place. In this post, we have a detailed review of the best scopes for M4 carbine to help you find the perfect optic for your needs.

The M4 carbine is a rugged rifle built to offer reliable precision in heavy combat applications. Though it is majorly used by the military, this rifle has grown to be a popular choice for hunters, home defenders, and shooting enthusiasts all over.

If you fall into any of these categories, you need a scope to enhance your performance. A scope will give you a better shot for the target in any situation and enhance your shooting or hunting skills.

However, not every scope out there is compatible with the AR15 M4. You need a scope that is designed with the needs of carbine shooters in mind to get the most out of this popular rifle. With that said, let’s take a look at the best scopes for M4 available on the market currently.


Best Scopes for AR15 M4

1) Vortex Razor Gen II-E 1-6x24mm Rifle Scope

Vortex Razor Gen II-E 1-6x24mm Rifle Scope



Vortex Razor Gen II-E 1-6x24mm Rifle Scope is one of the best scopes for AR15 M4. This is a no non-sense scope when it comes to short to medium-range tactical applications. It comes with nearly every feature that you need to take your hunting and shooting skills to the next big level.

Being an LPVO this riflescope is made for carbines and AR-15 Rifles.

Unmatched optical performance awaits you when you get this scope. Whether you will be using it in broad daylight or in low light settings of dawn and dusk, it generates high-quality and clear image views. This is thanks to the HD lens elements which maximize resolution and the XR Plus fully multi-coated lenses that enhance the transfer of light in inadequate light settings.

Better yet, Vortex made this scope with ease of use in mind. It has a fast-focus eyepiece that aids in rapid and accurate reticle focusing. It also boasts an illuminated reticle for easy aiming in low light settings and a long 4-inch eye relief that enhances your speed of target acquisition.

Construction-wise, the Razor Gen II-E scope is crafted from aircraft-grade aluminum. It is robust enough to take in any abuse, yet light enough to be easy to carry in the field. It also comes with a hard anodized finish that protects it from scratches and rust for greater durability.

The scope is also designed to perform under any weather condition thanks to the waterproof, dustproof, and fog proof design.


  • Hard anodized finish
  • Optically indexed lenses
  • Second focal plane reticle
  • 1-6x magnification
  • 30mm tube size
  • Large diameter turrets
  • Water, fog, and shockproof
  • Fast focus eyepiece
  • XR fully multi-coated lens
  • APO system
  • Erector tube system


  • Good quality glass
  • Robust and dependable construction
  • Versatile illumination
  • Long eyeglass-friendly eye relief
  • Capped turrets
  • Lightweight and easy to use
  • Ideal for a multitude of applications


  • Costly


2) Trijicon TA31RCO-M4 ACOG 4×32 USMC M4 Rifle Scope

Trijicon TA31RCO-M4 ACOG 4x32 USMC M4 Rifle Scope




The Trijicon ACOG 4×32 rifle scope is your ideal optic for hunting with the M4 carbine. It has a fixed 4x magnification ideal for shooting at constant ranges. It is simple to use and highly reliable.

The scope is built to offer exceptional clarity of target images in any lighting condition. It uses premium-quality glass and a fully multi-coated lens that make it excel in low-light settings. Furthermore, the scope comes with an illuminated reticle that uses fiber-optic technology to adjust the illumination based on the ambient light settings.

Another feature that sets it apart is its durability. This rifle scope is ruggedly built to handle any level of abuse you subject it to. The sturdy construction also ensures that it holds zero well even when you handle it roughly.

Moreover, the scope is waterproof and nitrogen purged to ensure that it stays immune to fog. To sum it up, the ACOG 4×32 scope has comfortable eye relief and a lightweight design to ensure that it doesn’t add any unnecessary weight to the rifle.


  • 4x magnification
  • Illuminated reticle
  • Water, fog, and shockproof design
  • Military-grade aluminum alloy housing
  • Fiber-optics illumination
  • Fully multi-coated lens


  • Battery-free illumination
  • Comfortable eye relief
  • Lightweight yet durable design
  • Great turrets


  • Fixed magnification


3) Trijicon 4×32 ACOG Scope M4A1 Rifle Scope

Trijicon 4x32 ACOG Scope M4A1 Rifle Scope



Designed specifically for the M4 carbine, the Trijicon 4×32 ACOG Scope will help you achieve the most out of your hunting/shooting trip by enhancing your shooting accuracy. It is ideal for mid-range shooting at constant ranges and is versatile enough to be used in multiple applications.

This scope is built to last. It is housed in aerospace-grade aluminum which is rugged and durable. You can subject it to the harshest outdoor conditions and it will still perform. Better yet, it is fully waterproof and fog-resistant to offer a lifetime of reliable performance under any weather.

With a mere weight of 15oz, the scope is light enough to disperse recoil and enhance mobility. Furthermore, it uses an illuminated reticle that provides a precise point of aim even in low-light settings. It is also designed to be used in a wide range of temperatures for greater versatility.


  • Internally adjustable
  • 4x fixed magnification
  • Waterproof, dustproof and shockproof construction
  • Dual illuminated reticle
  • 32mm aperture
  • Robust aluminum construction


  • Outstanding optical clarity
  • Great glass quality
  • Lightweight and easy to use
  • Compact design


  • Short eye relief


4) Vortex Strikefire II 1x30mm 4MOA Red Dot Sight

Vortex Strikefire II 1x30mm 4MOA Red Dot Sight



The Vortex StrikeFire II Scope is the best scope for AR15 M4 for the money. This red dot sight is designed to aid in rapid target acquisition and enhance your shooting accuracy in nearly all environments.

Featuring unlimited eye relief, the red dot sight guarantees comfortable shooting with or without eyeglasses. The 1x fixed magnification increases situational awareness by allowing for both-eyes open shooting, while the parallax-free design ensures that the dot stays accurate all the time.

Moreover, the optic features a fully multi-coated lens which provides a clean and clear field of view for accurate target identification. The 4 MOA dot optimizes shooting accuracy and has 10 dot intensity levels to ensure that you shoot easily in all lighting conditions.

In terms of construction, the scope is built to be nearly indestructible. It has a 30mm aluminum alloy chassis which provides a greater recoil-resistance rating. It is also shockproof to maximize durability and fully waterproof and fog proof for use in any weather.

The scope is also designed to be usable even in extreme temperature conditions ranging from -22 to 140℉.


  • Clear 4 MOA dot with 10 illumination levels
  • Fully multi-coated glass
  • Unlimited eye relief
  • 30mm tube diameter
  • Single-piece chassis
  • Shockproof and recoil-resistant construction
  • Waterproof and fog proof


  • Night vision compatible
  • Lightweight and compact design
  • Parallax free
  • Great field of view
  • Clean glass


  • The control knobs are stiff


5) NightForce 2.5-10x42mm NXS Compact Rifle Scope

NightForce 2.5-10x42mm NXS Compact Rifle Scope




Next on our list is the NightForce 2.5-10x42mm NXS rifle scope. Mounting this ultra-versatile optic on your M4 carbine will better your shooting skills and help you pursue targets even at long ranges with ease.

The scope has an adjustable 2.5-10x magnification suitable for taking shots at close to long ranges. It offers a large field of view at every zoom setting to ensure that you find targets swiftly. It also has an adjustable parallax ranging from 25 yards to infinity for greater long-range shooting accuracy.

This compact rifle scope is built to offer unmatched durability. It is built with premium quality components to optimize durability. Further, it offers superb low-light performance.

This is thanks to the large 42mm objective lens that collects as much light as possible. On top of that, the scope has multiple intensities of reticle illumination for use in various lighting settings.

Above all, all NXS rifle scopes are lightweight and comfortable to shoot with even when you are wearing eyeglasses.


  • Second focal plane reticle
  • Power throw lever for instant magnification adjustment
  • 30mm tube diameter
  • 5-10x variable magnification
  • Matte finish
  • Side parallax adjustment


  • Great glass quality
  • Night vision compatible
  • Comfortable eye relief
  • High-quality craftsmanship
  • Lightweight design


  • Pricey


Read Also: 7 Best Scopes for 25-06


Factors to Consider when Choosing the Best Scope for AR15 M4

The versatile design of the M4 scope requires a scope that is as versatile and reliable to offer great performance in the hunting field, shooting range, or in the battlefield. Below are the important factors to take into account when making your selection.

Prime Function

The prime function you purpose to use in the scope plays a big role in determining the model that you choose. Considering how versatile the M4 carbine is, it is best to get a scope that is ideal for use in different applications.

With an all-around scope, you will be able to switch from one shooting application to the other with ease.

Type of Scope

The good thing about the M4 is that it’s compatible with different types of optics. You can use it with a variable power scope or a red dot sight.

Go for a variable power scope if what you are after is flexibility to acquire targets at varying ranges. On the other hand, a red dot sight is ideal for short and medium-range shooting where accuracy and fast target acquisition are key.


The durability of the scope is important as it determines how dependable it will be. A scope made with premium-grade materials will be sturdy enough to withstand any abuse and give you many years of use.

Go for a model that is rated to be recoil-resistant, shockproof, and impact resistant. Such scopes offer unmatched durability no matter the punishment you subject them to.

Size and Weight

With the M4 carbine, it is best to get a scope that is compact in size and lightweight. To avoid adding unnecessary weight on the firearm, consider getting a scope that is not more than 2 pounds.

When it comes to size, the more compact the scope is the better. It will be easy to mount and detach. A compact scope is also easy to maneuver in the field.


Another important feature you should take into consideration is the reticle style. The scopes available on the market today have different reticle patterns ideal for use in different settings.

The most standard reticle style is known as a duplex. It is the most common reticle that is largely known for its ease of use.

Other reticle options available are Bullet Drop Compensator (BDC), Mil-Dot, and MOA. These reticles are ideal for taking shots at long ranges.


The other feature to consider is the whether or not the scope is weatherproof. The best scope for M4 should be operable in any weather. It should be sealed with O-rings to prevent water and dust from getting inside the optics. On top of that, it should be usable even in extremely high or low temperatures and be fully fog proof.

Best Scope for AR15 M4 FAQs

  • Do I need illumination?

Whether or not you need your scope to be illuminated largely depends on how you want to use that scope. For daytime hunting and shooting, illumination is not a must.

On the other hand, you will find an illuminated reticle really helpful when hunting in poor light settings. It will improve your aim and help you place the shot accurately.

  • Should I put a scope or a red dot on my M4?

This depends on your preference and your purpose to use the optic. If you plan to take shots of targets at longer ranges, put a scope on your M4. On the other hand, go for a red dot if you are looking to take shots up close.

  • What scope does the military use on M4?

The Trijico TA31RCO ACOG is the scope that is mainly used by the Army, Air Force, and Marine. It is known to aid in quick target acquisition no matter the shooting situation.


Hopefully, this Best Scope for AR15 M4 guide has been of help to you. Knowing what you intend to use the scope can help make the selection process less daunting. As you can see, there are plenty of scopes that you can mount on your M4. Use our guide to get the scope that will be helpful in the endeavors you intend to use it for.

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