10 Best AR 15 scopes 2025 in the United States

The ATN Thor 5 LRF is a high-tech thermal scope designed to enhance shooting performance in low visibility conditions such as night or fog. It features a 4-16x magnification range suitable for various distances, and a 320x240 sensor resolution paired with a bright OLED display provides clear, detailed images with rich colors, making target spotting easier in any light. The built-in laser rangefinder (LRF) allows quick distance measurement to targets, improving shooting accuracy.

A notable feature is the advanced ballistic calculator that automatically adjusts aiming points based on environmental data, helping shooters achieve more precise shots without manual calculations. Users can customize and share reticles, adding both functionality and personalization. The scope also records HD video of hunts for later review or sharing.

However, the scope weighs over 2 pounds and is larger than typical AR-15 scopes, which may affect balance and handling on lighter rifles. The price and technical complexity might exceed the needs of casual shooters, and export restrictions limit its availability. For serious users focused on thermal imaging and precision shooting with an AR-15, the Thor 5 LRF provides advanced capabilities, while newcomers or budget-conscious users might find it more than necessary.

The Vortex Crossfire II 3-9x40 is a solid choice for an AR-15 scope, especially for those interested in hunting or general shooting. Its 3 to 9 times magnification offers a flexible zoom range suitable for medium-distance targets, while the 40mm objective lens strikes a nice balance between brightness and compactness. The V-Brite illuminated V-Plex reticle helps with quick target acquisition in low-light situations, thanks to a battery-powered brightening dot without overwhelming complexity. The scope provides generous eye relief and a forgiving eye box, making it easier to get a clear sight picture quickly, which is important for fast-paced shooting. The fast focus eyepiece is handy for sharpening the reticle with minimal effort.

The scope’s fully multi-coated lenses enhance light transmission, giving bright and clear images, which is valuable during dawn or dusk shooting. Constructed from durable aircraft-grade aluminum and sealed against water and fog, it’s built tough to handle rough conditions and recoil without losing zero. While it doesn’t feature night vision compatibility or advanced turret adjustments found on higher-end models, its simple and reliable turrets provide straightforward windage and elevation adjustments, good enough for most AR-15 shooters. Its lightweight design (15 ounces) makes it comfortable to carry for extended periods.

The lifetime VIP warranty adds peace of mind for long-term ownership. This scope suits shooters who want dependable performance with good magnification versatility and rugged build without extra bells and whistles. It is a user-friendly option that balances clarity, durability, and ease of use well for typical AR-15 applications.

The Leupold VX-5HD 3-15x44 CDS-ZL2 is a high-quality riflescope well suited for AR-15 owners who want versatility from close to longer-range shooting. Its magnification range of 3 to 15x allows for flexibility, making it good for both quick target acquisition and more precise shots. The 44mm objective lens, combined with Leupold’s high-definition lenses and Guard-ion coating, offers clear and bright images even in challenging weather, which is helpful for hunting or outdoor use.

The Impact-29 MOA reticle is placed in the second focal plane, meaning the reticle stays the same size as you zoom, which some shooters prefer for clarity but may require adjustments when estimating range at different magnifications. Eye relief is generous and the side focus parallax adjustment makes it easier to keep your target sharp from various shooting positions. A standout feature here is the CDS-ZL2 turret system, which provides two full revolutions of elevation adjustment and includes a push-button ZeroLock to prevent accidental changes. This customization, combined with Leupold’s option for laser-marked bullet-drop dials tailored to your specific ballistics, is great for serious shooters who want precision without fuss.

The scope is built tough with waterproof, fogproof, and shockproof construction, and backed by Leupold’s lifetime warranty, ensuring it can handle rough conditions and last for years. It weighs about 2 pounds, which might be a bit heavy for those looking for a lightweight option on their AR-15. Also, being a second focal plane scope, the reticle’s use at varying magnifications might not suit everyone. This scope is ideal for AR-15 users who value clear optics, ruggedness, and customizable elevation settings, especially for hunting or tactical use, but those wanting a lighter or first focal plane scope might consider other options.