For years, I’ve been helping shooters of all levels improve their accuracy and confidence. One of the biggest game-changers I’ve seen is the adoption of red dot sights on handguns. The speed and intuitive aiming they offer are undeniable. But with so many options – from the popular Trijicon RMR to budget-friendly Holosun models – choosing the right one can feel daunting. This guide will walk you through everything you need to know about red dot sights for pistols, covering the differences between RMR and other options, MOA considerations, mounting, zeroing, and recommendations for popular pistol platforms like Glock, Sig Sauer, and Smith & Wesson. We’ll also tackle the age-old question: RMR vs RMR CC, and explore the world of cheap RMR footprint red dots.
Let's start with the basics. A red dot sight projects a visible dot onto the lens, allowing you to quickly acquire a target without needing to align iron sights. The “RMR” stands for Ruggedized Miniature Reflex, originally developed by Trijicon (Trijicon.com). The RMR quickly became the gold standard, and the term is often used generically to refer to any small, slide-mounted optic. However, many excellent alternatives now exist. These sights utilize LED technology to create the aiming point, offering long battery life and adjustable brightness levels.
Often used interchangeably, there's a subtle difference. A reflex sight is a broader category encompassing sights that use reflection to project an aiming point. A red dot sight specifically uses an LED to create that aiming point. Most modern pistol optics fall into the red dot category.
The market is flooded with options, so let's break down some of the major players. The RMR CC (Compact Carry) is a smaller, lighter version of the original RMR, designed for subcompact pistols. It offers a slightly smaller window and a lower profile. However, it’s often more expensive than comparable options. Holosun (Holosun.com) has become a major competitor, offering excellent value and features. Here’s a quick comparison:
| Feature | Trijicon RMR | Trijicon RMR CC | Holosun (Various Models) |
|---|---|---|---|
| Price | $500 - $800+ | $400 - $600+ | $100 - $400 |
| Size | Standard | Compact | Varies (Mini, Micro, etc.) |
| Battery Life | 3-5 years (CR2032) | 3-5 years (CR2032) | 20,000+ hours (CR2032) |
| Features | Rugged, Reliable | Compact, Lightweight | Shake Awake, Solar Power, Multiple Reticles |
Holosun often includes features like “Shake Awake” (automatically activates the dot with movement) and solar power augmentation, extending battery life. Other popular brands include Sig Sauer (Romeo series) and Crimson Trace.
MOA (Minute of Angle) refers to the size of the red dot. A 3 MOA red dot subtends 1.5 inches at 50 yards, while a 6 MOA red dot subtends 3 inches at 50 yards. For most pistol applications, 3 MOA is a good all-around choice, offering a balance between precision and speed. A 2 MOA red dot is more precise but can be harder to acquire quickly, especially for those with vision challenges. A 6 MOA red dot is faster to acquire but less precise. Consider your intended use and visual acuity when choosing. I often recommend 3 MOA for concealed carry and 6 MOA for competition or target shooting.
Open emitter sights (like the original RMR) have the LED exposed. This can lead to dot wash-out in bright sunlight. Closed emitter sights (like the RMR CC and many Holosun models) enclose the LED, protecting it and reducing glare. Closed emitters are generally preferred for carry optics.
The red dot footprint refers to the mounting pattern on the slide. The RMR footprint is the most common, but others exist, including the Sig Sauer RomeoZero footprint and the Docter/Noblex footprint. Ensure your chosen sight and mounting plate are compatible with your pistol. Many aftermarket companies offer adapter plates to allow you to mount an RMR-pattern sight on a pistol with a different footprint. Popular options include the Shield footprint red dots and Glock 19 red dot sights.
Here are some recommendations based on popular pistol platforms:
Zeroing a red dot on a handgun is different than zeroing iron sights. You're adjusting the point of impact to match your point of aim. Start at 7-10 yards. Shoot a group and observe where the impacts are. Use the adjustment screws on the sight to move the dot towards the center of your group. Repeat until you are consistently hitting your target. Many manufacturers provide red dot pistol zero targets to help with this process. (Sig Sauer Zeroing Guide)
Co-witnessing refers to aligning your red dot sight with your iron sights. This provides a backup aiming system if the red dot fails. You’ll need to choose the correct height mounting plate to achieve proper co-witnessing.
Regularly check the battery in your red dot. The Trijicon RMR type 2 battery life is excellent, but batteries do eventually need replacing. Learn how to adjust the brightness and zero your sight. Practice regularly to maintain proficiency.
In my experience, adding a red dot to a handgun is one of the best upgrades you can make. The increased speed, accuracy, and confidence are well worth the investment. Whether you choose an RMR, Holosun, or another brand, do your research and select a sight that fits your needs and budget. Don't be afraid to try different MOA sizes and mounting options to find what works best for you. And remember, proper training and practice are essential to maximizing the benefits of your new optic. The world of pistol optics is constantly evolving, so stay informed and enjoy the journey!
Disclaimer: I am an independent writer and adventurer with over 10 years of experience in the outdoor industry. This article is based on my personal experience and research. Always consult with a qualified firearms instructor before using any firearm or optic.