Finding the right red dot sight for your firearm can feel overwhelming. With so many models and mounting systems available, knowing which red dot fits which gun requires understanding a few key factors. This guide will break down the process, helping you choose the perfect red dot for your specific needs. We'll cover everything from identifying your gun's mounting system to understanding different red dot footprints and ensuring a secure and reliable fit.
Understanding Firearm Mounting Systems
The most crucial aspect of choosing a red dot is understanding your firearm's mounting system. Different guns use different systems, and an incompatible system means your red dot simply won't attach. The most common systems include:
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Picatinny/Weaver Rails: These are the most prevalent systems. Picatinny rails have a standardized spacing of 0.2 inches between the slots, while Weaver rails have slightly different specifications. Most red dots are designed to work with both, but always double-check compatibility. Look for red dots explicitly stated as compatible with Picatinny/Weaver rails.
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Dovetail Rails: Older firearms often utilize dovetail rails. These are less common on modern pistols and rifles but still exist. Dovetail rails require specific mounts designed for that particular rail type. You'll need a dovetail mount adapter if your gun uses this system and your red dot is designed for Picatinny/Weaver.
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Proprietary Mounting Systems: Some manufacturers use proprietary mounting systems specific to their firearms. These require mounts specifically designed for that brand and model. Always consult your firearm's manual to determine the correct mount.
Identifying Your Firearm's Mounting System
Before purchasing any red dot, visually inspect your firearm. Locate the rail on your gun, then measure the spacing between the slots if it’s a Picatinny/Weaver rail. Your firearm's manual should provide clear diagrams illustrating the type of rail. If unsure, contact the manufacturer or a qualified gunsmith.
Understanding Red Dot Sight Footprints
Red dot sights themselves come with different mounting footprints. These footprints determine which type of rail or mount the red dot will fit. The most common footprints include:
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Picatinny/Weaver: As mentioned earlier, this is the most common footprint, compatible with the standard rails.
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Miniature Red Dot (MRD) Footprints: This category encompasses various slightly differing footprints, leading to potential compatibility issues. Some popular MRD footprints include the Glock MOS system, Shield RMSc, and others. Always check the manufacturer's specifications for the exact footprint.
Table 1: Common Red Dot Footprints and Compatibility
| Red Dot Footprint | Compatible Rail Systems | Notes |
|---|---|---|
| Picatinny/Weaver | Picatinny, Weaver | Most common, highly versatile |
| Glock MOS | Glock MOS system (proprietary) | Requires Glock MOS slide or adapter plate |
| Shield RMSc | Shield RMSc system (proprietary) | Requires Shield RMSc slide or adapter plate |
| Trijicon RMR | Varies, often requires specific mounts | Check manufacturer's specifications |
| Leupold DeltaPoint Pro | Varies, often requires specific mounts | Check manufacturer's specifications |
Matching Red Dot to Your Gun: A Step-by-Step Guide
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Identify Your Gun's Rail: Carefully examine your firearm and locate its mounting rail. Determine if it’s a Picatinny/Weaver, dovetail, or a proprietary system.
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Check the Red Dot's Footprint: Review the red dot sight's specifications provided by the manufacturer. Pay close attention to its mounting footprint.
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Verify Compatibility: Ensure the red dot's footprint matches your gun's rail system. If incompatible, you'll need an adapter mount.
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Consider Additional Factors: Account for factors such as size, weight, and desired features before making a final decision. A bulky red dot might be uncomfortable on a smaller handgun.
Case Study: Choosing a Red Dot for a Glock 19
Let's say you own a Glock 19. The Glock 19, depending on the model, might have a Picatinny rail (often requires aftermarket modifications) or a proprietary MOS system. If it's a standard Glock 19 without MOS, you'll need an adapter plate to attach a red dot with a Picatinny/Weaver footprint. However, if your Glock 19 is a MOS variant, it's designed to directly accommodate Glock MOS-compatible red dots.
Always cross-reference the manufacturer's guidelines to ensure a perfect match.
Conclusion: Precision and Safety
Choosing the correct red dot sight is crucial for both accuracy and safe firearm handling. Double-checking compatibility prevents potential mishaps, ensuring your red dot remains securely mounted and performs reliably. Always consult the manufacturer's instructions for both your firearm and the red dot sight. If unsure, seek the assistance of a qualified gunsmith. Remember, safety is paramount!