Our Top Picks
Bushnell Banner Dusk & Dawn Multi-X Reticle Riflescope 3-9x40mm
Best Red Dot
Bushnell Trophy TRS-25 Red Dot Sight Riflescope
The AR-15 is an easy-to-shoot, versatile, and accurate firearm. If you want to take your shooting accuracy to the next level, get a riflescope! On a budget? That won’t be a problem! Because in this article, we’ve reviewed the best scope for AR-15 under $100!
Comparison of the Best Scopes for AR-15
Last update on 2021-12-04 / Images from Amazon Product Advertising API
How We Choose + Our Must-Have Features
Make a checklist with these features and be sure to tick all the boxes so you know you’re buying the best scope for your AR-15.
The main reason why you want a scope is for magnification purposes. So make it a priority. Get a riflescope with magnification that fits your shooting needs. If you’ll only be shooting at close range, get a low-power variable optic (LPVO). If you’re shooting at close range now and you think you’d be upgrading to long distance in the future, then it’s best to get a scope with a wider magnification range.
However, since it’s a low-cost scope, expect its range to be limited to 3x (ex. 3-9x) or less. And you’ll normally be looking at only second focal plane scopes.
You’re buying a low-priced scope, you should expect to make compromises on optical quality. But, we’ve listed the scopes with the best clarity and multi-coated lenses that’ll help you acquire targets quickly.
Scope Construction and Durability
If you’ll be shooting regularly, choose a scope that’s at least shockproof, waterproof, and fog proof. This way your day won’t be ruined by bad weather. Affordable scopes may not be as tough as those high-end optics. But there are some that are adequate with heavy recoil and everyday use, and we included them in our list below.
5 Best Scopes for AR 15
Best Overall: Bushnell Banner Dusk & Dawn Multi-X Reticle Riflescope 3-9x40mm
Aside from 9x magnification and a powerful 40-mm objective lens, our top pick, the Bushnell Banner riflescope comes with Dusk & Dawn Brightness (DDB) multi-coated lenses. The lenses are constructed to perform well even in low light, making hunting during dusk or dawn easier.
Quick target acquisition is also guaranteed with the Bushnell Banner’s Multi-X reticle and features 1/4 M.O.A. fingertip windage and elevation adjustment. That’s not all, it’s also waterproof, shockproof, and fog proof, as it’s nitrogen-purged.
The only missing feature is parallax adjustment, which is a small compromise for the long-lasting durability and reliability that this scope can offer.
What Customers Say
Best Value: Simmons 560520 Truplex Riflescope
Our best value pick guarantees quick and easy adjustments, thanks to its audible-click elevation and windage turrets. These sturdy and reliable knobs also hold zero perfectly and consistently no matter how heavy the recoil your rifle makes. You can shoot a hundred rounds with this scope and its zero won’t drift.
However, it’s worth noting that the adjustment knobs require a little bit of effort to twist and turn at the beginning. The Simmons Truplex Riflescope also features glass that’s surprisingly clear for its price! There’s a slight blur around the lenses’ edges like with the Bushnell Dusk to Dawn series; but for a price this low, the compromise is pretty worth it.
What Customers Say
Best Red Dot: Bushnell Trophy TRS-25 Red Dot Sight Riflescope
Our best red dot pick takes pride in its excellent light transmission and glare reduction properties. While this isn’t technically a scope, we think it’s worth a mention since red dots are great for close-quarters action. The Bushnell Trophy TRS-25’s adjustment knobs also come with thick and durable water gaskets. These knobs are also tight enough and hold well even after doing a lot of heavy shooting.
Its 3 MOA red dot reticle features 10 adjustable brightness settings that let you acquire targets quickly and save your battery by setting the illumination to low.
The TRS-25 is also ready-to-mount on most Picatinny rails and it comes in a precision-engineered housing that can survive daily abuse and harsh environments.
What Customers Say
Best LPVO: Bushnell Banner Dusk & Dawn Multi-X Reticle Riflescope 1.5-4x32mm
This Bushnell Banner riflescope features almost the same features as our best overall pick. One difference is that it’s a low-power variable optic.
This low-light scope is engineered for standard hunting rifles. It comes in two types f reticles. The multi-x reticle is best for rifles and has 100-yard parallax, while the circle-x reticle is for shotguns and has 75-yard parallax.
The Bushnell Banner 1.5-4x32mm scope can perform up to 300 yards, depending on your shooting skills. It also produces clear and crisp images both in daylight and during dusk.
Its crosshairs are narrow in the middle and wide on the outer edges, giving you extra aiming precision and quick target centering.
What Customers Say
UTG 3-9X32 1" BugBuster Scope
The UTG BugBuster is a parallax-free scope from 3 yards to infinity through its adjustable wide-angle front objective.
The UTG Bugbuster features a range-estimating mil-dot reticle that has 9 dots in each direction of the crosshair, so you’ll get 19 aiming points. It also comes with a side wheel illumination, giving you easy access to reticle light and not getting in the way of the eyepiece.
Yes, it’s a low-priced scope, but there’s no need to give it special treatment because it can handle getting bumped around while hunting or during your drive to the range. That’s because it is carefully designed and impact-tested before being released into the market.
However, we would not suggest you use this for dangerous game. The reputation just isn’t there for UTG like it is for our other picks.
What Customers Say
Alternative: Iron Sights
Iron sights may add a few ounces to your AR-15 setup, but it sure is worth it. Iron sights are reliable and solid backups for when your riflescope fails. At 200 yards, they greatly improve your accuracy with the right skills and when sighted in properly.
With iron sights, you never have to worry about running out of battery because they have no power. They’re also smaller, lighter, and less prone to breakage than optical sights. The downside is its low-light performance for home defense use.
What is a good cheap AR scope?
A good cheap AR scope is nearly as reliable as the expensive ones and won’t give you headaches in the long run. Check out the Bushnell Banner Dusk and Dawn we recommended above.
Should I put a scope on my AR-15?
Yes, you should. Putting a scope on your AR-15 will help you extend your range and acquire targets quickly.
Should I put a scope or red dot on my AR?
This depends on your needs and intended use. Will you be using your AR for close-quarter battle scenarios or tactical shooting? If yes. you’d need an optic with no magnification for faster target acquisition, so go with a red dot sight like the Bushnell Trophy TRS-25.
But for long-range shooting competitions where you need speed, accuracy, and precision, a scope with higher magnification works best.
The AR-15 is great for hunting, plinking, and target shooting. And our top pick, the Bushnell Banner Dusk & Dawn Multi-X Reticle Riflescope 3-9xmm will surely get the most out of yours. If you need scopes with higher magnification (and higher price tag) like what we mentioned above, you can look at our review of the best 1000 yard scopes.