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[Optic Battle] Red Dot with Magnifier vs. Prism vs. LPVO

Wondering what's the best magnified setup? Come read up on red dots, prisms, and LVPOs to find out which one is right for your setup.

    When we talk about optics, often time people focus on the specific type of optic…

    Red dot, prism, LVPO, scope…you get the idea.

    A Couple AR-15 Optics
    A few AR-15 optics.

    But in reality, when building out your firearm, it’s not just about the optic itself.

    It’s also important to think about the weapon system you’re placing it on too. 

    A red dot on a long-range rifle makes about as much sense as a high-powered scope on a pistol caliber carbine.


    The wide world of optics is chock full of options. So how do you know what optic is best for your platform and shooting application?

    Don’t worry, we got you, fam.

    Today, we’re going to focus on the popular AR-15 platform, and similar rifles, to nail down the kind of optics you can expect to see paired with an AR.

    Cheap Red Dots, Side
    Red dots aren’t just for pistols.

    In specific, we’ll examine the three most popular optics on these types of rifles — red dots and magnifiers, fixed power prism scopes, and low powered variable optics. 

    By the end, you should know the difference between these styles and which one is best for what you need from your rifle.

    Let’s dive into them!

    Table of Contents


    Red Dots With Magnifiers

    Red dots are pretty popular and that’s because they work on everything.

    Rifles, shotguns, handguns…you name it, there’s a red dot for it! 

    Tested Pistol Red Dots
    Pistol Red Dots

    Red dots are small, ultra-lightweight, and very easy to use and come in all sizes.

    Want a full-size rifle red dot? Check out the Aimpoint Comp M4.

    Need a miniature red dots for a smaller PCC? Look at the Trijicon RMR.

    Best Pistol Red Dot
    at Amazon

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    Red dots are great for newer shooters. I teach new shooters with red dots over irons because they are really easy to use.

    Put the red dot on the target and pull the trigger. It doesn’t get simpler than that.

    Budget Red Dots, Front
    Budget Red Dots

    What range are red dots best for?

    These optics are close-range masters

    Inside a house or a building, I’d take a red dot at any time. When things are fast and close, simpler is the better. 

    The illuminated reticle works 24 hours a day.

    red dot sight aiming at bullseye
    Easy peasy!

    Their small size is also beneficial for small guns.

    You can pick a compact model like the Romeo5 from SIG or the Aimpoint T1 and tack it on a Mini Scorpion with room left over.

    A smaller, lightweight optic like a compact red dot is great for these miniguns since they keep the weight down!

    Brutally Tested Budget Red Dot
    at Palmetto State Armory

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    Red dots are best used within 200-yards — again, they’re made for close quarters shooting.

    You can, for sure, hit a man-sized target out to 200-yards, but the lack of magnification makes it challenging to identify a target or hit a small target.

    The good news is we can fix that…keep reading to find out how.

    Red Dot Pros

    • Rapid instinctive aiming
    • Simple to use
    • Compact and lightweight
    • Unlimited eye relief
    • Available at any budget
    • Capable of insane battery life 

    Red Dot Cons

    • Limited use at extended ranges
    • The simplistic reticle offers no holdovers 
    • If the battery dies, you’re done. 

    Let’s Add a Magnifier

    How do we push our red dot out even further?

    Magnifiers, of course! 

    A magnifier is a device that squeezes behind a red dot.

    These nifty tools can add anywhere from 3- to 6-power to the optic and give you that little extra edge.

    Most magnifiers can flip over the side and out of the way for close-quarters use but instantly flip back into place for long-range shots

    3x Magnifiers
    3x magnifiers

    The downside to a magnifier is that it has to be the same height as your red dot…and most magnifiers are designed for AR heights.

    Magnifiers also take away the lightweight, and compact advantage red dots offer. Oh, and they’re only set to one level of magnification. 

    You can get a 2X screw-on device, or flip off magnifiers in 3x or 6x, but your only option is that one level of magnification your magnifier is set at. 

    Primary Arms 3x Magnifier with Vortex AMG UH-1
    Primary Arms 3x Magnifier with Vortex AMG UH-1

    Magnifiers do help quite a bit for extended range shooting, but the simple red dot reticle is nowhere near as diverse as a proper optic reticle.

    With magnifiers you lose ballistic bullet drop reticles and windage adjustments you’ll find on optics dedicated to longer ranges.

    Unfortunately, they also take away some of the advantages of a red dot.

    With a magnifier in place, you have the downsides of a traditional optic. This includes a set eye relief and eye box, and on top of that, your ability to co-witness with iron sights is gone. 

    3x Magnifiers, No Optic
    3x Magnifiers, No Optic

    Magnifier Pros 

    • Extends your ability to identify targets and hit small targets 
    • Can be flipped on or off quickly for easy use

    Magnifier Cons

    • Increases the size and weight of your setup
    • Gives you only one level of magnification 
    • Increases cost significantly 

    When Should I Use a Red Dot?

    Obviously, red dots are best used in close and personal encounters like home defense.

    If you need something fast, lightweight, and straightforward to use…red dot’s your guy.

    They’re also great on lightweight guns like PCCs where their range is limited by the nature of their cartridge.

    Red Dot Torture Test
    But if this happens…you’re toast.

    Best Red Dots 

    1. Aimpoint Comp M4 [Premium-Grade]

    The choice of the US Army and numerous law enforcement agencies is the Comp M4. It’s one of the most rugged sights on the market.

    It can be submerged, beaten, and thrown…and still work.

    The Comp M4 is a full-sized red dot well suited for magnifier use. 

    at Amazon

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    2. SIG Romeo5 [Affordable]

    The SIG Romeo5 is one of the best deals on the market! For less than $150, you can get a great red dot for a good price.

    It’s reliable, robust, compact, and lightweight.

    Not to mention it offers an impressive 40K hour battery life and motion-sensing MOTAC technology for instant-on access.  

    Brutally Tested Budget Red Dot
    at Palmetto State Armory

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    3. Bushnell TRS 25 [Broke-Grade]

    The TRS 25 proves that a red dot can come in under $100 and still be useable. It can be had for as low as $50 if you price watch, but rarely more than $80.

    This compact red dot sight isn’t fancy, but it works.

    The RS 25 won’t fall apart, and it holds zero. 

    Most Affordable Red Dot
    at Amazon

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    Prism Sights 

    Prism sights are fixed power sights with a relatively low magnification level.

    They range in magnification from none at 1x to 6x, on average.

    The most famous of these sights is the Trijicon ACOG, which is an excellent optic issued by both the United States Army and United States Marine Corps. 

    at EuroOptic

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    Prism sights measure quite small for a magnified optic.

    Not as tiny as a red dot, but much smaller than a traditional variable optic.

    Primary Arms ACSS 1x Prism Compared to 1x ACOG
    Primary Arms ACSS 1x Prism Compared to 1x ACOG

    On a rifle, prism sights have a downright tiny footprint! 

    They are also tough as hell. (See our torture test!)

    Ultimately, the simplicity of prisms makes them hard to break.

    Trijicon TA-02 Acog .410 Birdshot
    We’d know — we’ve tested that!

    On top of that, these optics have an etched reticle.

    The benefit here is if the electronics fail or the battery dies, the reticle is still visible and easy to use. 

    But reticles can also be complicated and more robust, compared to a red dot and a magnifier.

    The ACSS reticle from Primary Arms is an excellent example of how sturdy and useful a prism reticle can be.

    at Primary Arms

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    1x prism sights seem silly, but for shooters with astigmatism, a prism sight works much better than a red dot.

    The Vortex Spitfire prism scope, for example, gives you a three-circle reticle that is just as simple as a red dot — but more friendly for astigmatism. 

    Best Fixed Magnification
    at Amazon

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    The tradeoff is a smaller, tougher optic stuck at one level of magnification.

    Some magnification allows you to identify targets and see smaller targets, but you’re limited on what you can do with it.

    All of the Prism Scopes
    We uh, like our prisms.

    Another downside? Close quarters shooting with any of the magnified optics can be tricky. 

    In the USMC, we trained to shoot with both eyes opened, swapping focus from one eye to the other depending on what we were doing.

    Close-quarters? Let’s talk about that.

    For close-quarters shooting, we focused our non-dominant eye, and the reticle became superimposed over our target. 

    It works like a red dot and can be useful, but is nowhere near as instinctive or as easy as a red dot.

    Primary Arms SLx3 Prism CQB Reticle
    Primary Arms SLx3 Prism CQB Reticle

    With a 2.5x to 4x optic, this is an okay solution, but with 5x and 6x optics, it gets a little harder. 

    You also can’t co-witness with iron sights with a magnified prism scope.

    Primary Arms SLx3 Prism Illumination Knob
    Primary Arms SLx3 Prism

    A lot of prism optics allow you to mount a red dot to the optic as a backup option and for close-quarters shooting.

    Prism Pros 

    • Extremely durable
    • Compact
    • Allow for complicated reticles
    • Work without batteries 
    • Perfect for those with astigmatism 
    • Magnified variants are ideal for use within 300 yards. 
    • Robust reticles for bullet drop and windage. 

    Prism Cons

    • One magnification setting
    • Tricky to use for close-quarters shooting

    When Should I Use a Prism?

    Prism sights are great for rifles that you know will be used at a particular range.

    They can also keep your gun nice and light. Simply put, they’re an excellent choice for short carbines.

    Prism sights tend to be super sturdy and great for rifles that might get beat up during use. 

    Primary Arms SLx3 Prism
    Primary Arms SLx3 Prism

    Best Prism Sights 

    1. Trijicon ACOG [Premium Grade]

    Any ACOG is guaranteed to be a tough piece of gear. I used one for years as a Marine, and they never let me down.

    ACOGs are rock-solid, reliable, and incredibly useful on a variety of rifles.

    The battery-free illumination method is fantastic, and the BDCs are dead on.

    With a variety of magnification ratings to choose, 4X tends to be the standard. 

    at EuroOptic

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    2. Browe Combat Optic [Feature-Packed]

    Take everything that makes an ACOG great and then improve it a bit, and you have the Browe Combat Optics.

    The BCO is battery powered and built to be just as tough as an ACOG.

    One of the coolest features? The reticle adjusts in brightness based on what you are looking at versus where you are standing. 

    at OpticsPlanet

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    3. Primary Arms SLx 3 Compact Gen 2 Prism Scope [Affodable]

    Primary Arms needs to shorten the name of their optic, like a lot.

    Regardless, the SLx 3 is a 3x optic that comes in several different reticle options.

    Personally, the ACSS for 5.56 is my favorite, and it’s also the most common.

    This sturdy little scope is crazy affordable and very well made. 

    at Primary Arms

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    Low Powered Variable Optics  (LPVO)

    As far as these three types of optics go, LPVO type optics are the youngest of the bunch.

    Red dots and prism scopes have been around for quite some time, but LPVOs are taking the market by storm.

    These optics commonly feature magnification levels that range from 1-4x all the way to 1-10x.

    Best 1-6x Scopes
    These sure do look nice.

    Why the hype?

    LVPOs give you options — lots and lots of options.

    At 1x, you can use the optic in close quarters, shooting with ease.

    If, all of a sudden, a target appears further away (or even moderately far away) dial up the magnification to engage. 

    PSA AR-10 with Primary Arms 1-6x
    PSA AR-10 with Primary Arms 1-6x

    LVPOs are incredibly popular for 3-Gun competitions where shooters go from point-blank range shots to targets 100+ yards away.

    These optics also offer tactical applications.

    Magnification allows you to be more precise and to hit smaller targets.

    Vortex Viper PST II 1-6x
    Vortex Viper PST II 1-6x

    Extra magnification allows for target identification. Positive Identification, or PID, is absolutely necessary in the police and military world.

    LPVOs can also feature well-designed reticles for different calibers and holdovers, and these are etched reticles as well.

    Swampfox Arrowhead 1-8x LPVO
    Arrowhead on the DSA modernized FAL.

    So what’s the downside to this rad design?

    Compared to a prism sight, they aren’t as durable.

    Their variable nature makes them a bit more fragile due to the more complicated design.

    They are also the largest of these optics and take up much more room than a red dot or prism sight. 

    CQB shooting with both eyes opened is easy, but a red dot is still faster.

    Vortex Razor Gen 3 1-10X mounted
    Vortex Razor Gen 3 1-10X mounted

    With an LPVO, you still have to compensate for the eye box and the eye relief to get a good sight picture.

    Additionally, the focal plane can make a big difference for bullet drop. 

    With a first focal plane LPVO, the magnification doesn’t matter.

    With a second focal plane, the bullet drop and windage are typically only truly accurate at the highest level of magnification.

    FFP optics tend to be more expensive than SFP optics. 

    LPVO Pros 

    • Extremely versatile due to variable magnification
    • Useful reticle aplenty
    • Well suited for competition, hunting, and tactical use
    • You can accurately engage a target from 10 feet to 300 yards

    LPVO Cons 

    • Largest of the optics on this list
    • Not as tough as red dots or prism scopes
    • Not as fast on target as a red dot

    When Should I Use an LVPO?

    An LVPO is perfect for outdoor use of your rifle — think hunting, competition, police work, or prepping.

    While it can be used up close and personal, it’s not the best option for that role. 

    Mounted Primary Arms 1-6x
    Mounted Primary Arms 1-6x

    Best LVPOs

    1. Vortex Optics Razor HD Gen II [Premium-Grade]

    The Razor is a high-end optic and one of the best 1-6s on the market that’s priced under $2,000.

    Vortex’s Gen 2 is lighter by about half a pound, but still provides the same level of durability and robust construction.

    The image through this bad boy is absolutely gorgeous. Real talk, this optic makes it hard to go back to more affordable options. 

    Clearest 1-6x Glass
    at OpticsPlanet

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    2. Primary Arms 1-6x Gen 3 [Budget-Grade]

    Primary Arms is easily the best scope company when it comes to budget options.

    And the 1-6x SLx line is fantastic. Equipped with the always awesome ACSS reticle, holdovers work with 5.56, 5.45, and 308.

    The scopes are clear, well built, and will last for quite some time.

    It’s the perfect LPVO for budget-minded shooters

    at Primary Arms

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons

    3. Bushnell AR 1-4x Drop Zone Reticle [Broke-Grade]

    Bushnell makes okay budget optics that are ultra-affordable.

    The AR line is a simple series that can be had for about $150.

    I’ve had mine for a few years, and it’s been an impressive optic. I purchased it for less than a $100 on sale, and it’s been rocking and rolling on a few different guns.

    If you aren’t sure you want an LPVO and want to try one out, wait until one of these goes on sale and snatch it up. 

    at OpticsPlanet

    Prices accurate at time of writing

    Prices accurate at time of writing

    Available Coupons


    Finding the right optic really depends on first defining the task. Close quarters home defense shooting works best with a red dot while longer range shooting, like in competition, might dictate a prism or LVPO.

    Knowing what you intend to use the optic for will help you narrow down the options, leading you to the perfect optic for your setup.

    Group Shot of Destroyed Optics
    Just uh…be a little nicer to your optics than we are, yeah?

    What optics do you run? Better yet, why? Tell us all about it in the comments section! For more great AR options? Head over to the Best AR-15 Scopes and Optics where we go through everything from red dots to magnified options.

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    4 Leave a Reply

    • Commenter Avatar
      sound awake

      arguing which is better red dot with magnifier or lpvo is like arguing which is better mlok or keymod
      everybody already knows which is better

      January 25, 2021 9:00 pm
      • Commenter Avatar


        June 18, 2021 9:23 pm
      • Commenter Avatar

        Yeah. Eotech holographic + magnifier is best.

        March 24, 2022 6:52 am
    • Commenter Avatar

      no bravo5?

      January 25, 2021 12:36 pm
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