10 Best AR 15 scopes 2026 in the United States

The Holosun 510C & HM3X combo is a versatile sight setup designed for AR-15 rifles, pairing a red/green multi-reticle reflex sight with a 3x flip-to-side magnifier. It offers a fixed 3x magnification through the magnifier, which is helpful for quick switching between close-quarters and longer-range targeting without changing optics. The reflex sight features an innovative LED system that can run up to 50,000 hours on a single CR2032 battery, reducing the need for frequent battery changes. Users can cycle through three reticle options—a 65 MOA circle with a 2 MOA dot, a dot-only, or a circle-only reticle—without needing to re-zero, providing flexibility for different shooting preferences.

Eye relief is generous at about 70 mm, allowing comfortable use without straining eye position. The sight is protected by a titanium alloy hood, adding durability and waterproofing down to one meter, which suits rugged field use and heavy calibers. It mounts easily on Picatinny or Weaver rails, common on AR-15 platforms. The magnifier is fixed at 3x, so those seeking variable zoom levels might find this combo limiting. While the reflex sight is compact and lightweight, the total package weighs around 1 pound, which is reasonable but might feel a bit front-heavy on some setups.

The included protective case and tools add value for care and maintenance. This combo is well suited for shooters looking for a reliable, battery-efficient reflex sight with a practical fixed magnifier, especially useful for hunting or tactical scenarios where quick target acquisition and some magnification are desired.

The Trijicon ACOG 4 x 32 Scope is a versatile and robust choice for those needing a reliable AR-15 scope. It features a magnification range from 3x to 4x, which is suitable for mid-range shooting. The objective lens diameter of 40mm ensures clear and bright images. One of its standout features is the tritium/fiber optic illuminated reticle that adjusts brightness based on available light, making it advantageous for various lighting conditions without needing batteries. The red Chevron ranging reticle aids in bullet drop compensation up to 800 meters, enhancing long-range accuracy, particularly when paired with the USMC's M16A4 weapon system.

The eye relief is relatively short at 1.5 inches, which might be less comfortable for some users, especially with powerful recoil. The rugged aluminum-alloy housing makes it extremely durable, a notable feature for combat or harsh environments. The scope employs the Bindon Aiming Concept, allowing for 'both eyes open' shooting, which can improve situational awareness in close-quarter combat situations.

While it does not feature night vision, this scope is highly rated by users for its reliability and performance in diverse conditions. It is relatively heavy at 2 pounds, which might add noticeable weight to the rifle. The product is well-regarded but comes at a premium price, reflecting its advanced features and durable build, making it a suitable choice for serious shooters and professionals in demanding environments.

The Vortex Optics Venom 3-15x44 First Focal Plane Riflescope is designed for those looking to enhance their long-distance shooting capabilities. This scope offers a magnification range of 3x to 15x, allowing for versatility in various shooting scenarios. The 44mm objective lens combined with the XD Optical System ensures clear and sharp images with reduced chromatic aberration, making it suitable for low-light conditions as well. The EBR-7C reticle is a standout feature, providing accurate measurements throughout the magnification range, which is crucial for precise targeting and ranging.

The eye relief of 3.7 inches ensures comfortable viewing, minimizing strain during prolonged use. The field of view is 8.4 feet, which is reasonable for its class, providing a good balance between target acquisition and situational awareness. The scope's turrets are user-friendly, with capped windage and exposed elevation turrets that offer quick adjustments while maintaining precision. The RevStop Zero System is a significant advantage, allowing for a fast and reliable return to zero, which is essential for consistent shooting performance. Durability is another strong point, with a shockproof aluminum tube and an Armortek coating that protects the lenses from scratches and oil. Additionally, the scope is nitrogen-purged, ensuring waterproof and fogproof performance, which adds to its reliability in various environmental conditions.

However, it's worth noting that the scope does not have night vision capabilities, which might be a limitation for some users. At 1.8 pounds, it is relatively lightweight, making it a good match for most rifles without adding excessive weight. The Vortex Venom is also backed by a robust lifetime warranty, providing peace of mind for users concerned about long-term durability and performance. This riflescope is a solid choice for hunting and long-distance shooting, offering a good mix of features, durability, and ease of use.