Choosing the right red dot sight (RDS) for your Glock MOS (Modular Optic System) can feel overwhelming. The Glock MOS system offers flexibility, but understanding the footprint differences between popular options like the Trijicon RMR and others is crucial for a proper fit and optimal performance. This in-depth guide compares the Glock MOS footprint to the RMR footprint, helping you make an informed decision.
Understanding the Glock MOS System
The Glock MOS system is a factory-milled slide offering a standardized mounting system for RDS. Instead of aftermarket milling, Glock pistols with MOS incorporate ready-made mounting plates, simplifying the process. This system uses different plates to accommodate various red dot sight footprints. Understanding your pistol's specific MOS configuration is paramount before selecting an optic.
Glock MOS Footprint Explained
The Glock MOS system isn't about a single "footprint." Instead, it offers adaptability through interchangeable mounting plates. These plates accommodate various RDS models with different footprint specifications. Each plate is designed for specific optic brands and models, ensuring a secure and precise fit. Common Glock MOS plate options include those for:
- Trijicon RMR: A very popular choice known for its ruggedness and reliability.
- Leupold DeltaPoint Pro: Another popular choice offering a slightly different form factor.
- Holosun: A variety of Holosun models, known for their affordability and feature-rich options, are compatible.
- Shield RMSc: A compact option suitable for smaller handguns.
The Trijicon RMR Footprint: A Detailed Look
The Trijicon RMR (Miniature Rifle Sight) is a highly regarded RDS known for its durability and performance. Its footprint is a common standard for many pistol-mounted red dots. Key dimensions of the RMR footprint include its overall length and width, as well as the screw hole spacing and pattern.
Key RMR Footprint Characteristics:
- Compact Size: The RMR’s smaller size is a major selling point for many users who prefer a low profile RDS.
- Robust Construction: Known for its ability to withstand recoil and harsh conditions.
- Wide Variety of Models: Available in various reticle options, including various dot sizes and brightness settings.
- Popular Choice: Its popularity means readily available accessories and support.
While the exact dimensions vary slightly depending on the RMR model (Type 1, Type 2, etc.), its footprint is generally considered a standard within the industry.
RMR vs. Other Footprints on Glock MOS
The RMR's footprint, while popular, isn't the only option. Several other RDS models have their own distinct footprints. These often necessitate different mounting plates on the Glock MOS system. Using the wrong plate will result in an insecure and potentially dangerous mounting of the optic.
Choosing the Right Optic and Plate for Your Glock MOS
The process of choosing the right optic involves several factors:
- Identify your Glock model: Ensure it's a MOS model.
- Determine the desired features: Consider battery life, reticle type, and durability requirements.
- Check compatibility: Confirm your chosen RDS has a compatible mounting plate for your Glock MOS. Refer to Glock's official documentation or the RDS manufacturer's website.
- Assess your budget: Prices vary considerably between RDS models.
Caution: Always double-check the compatibility between your chosen optic, the mounting plate, and your specific Glock MOS model. Improper installation can lead to malfunction or even injury.
Case Study: Comparing RMR and Leupold DeltaPoint Pro on a Glock 19 MOS
Let's consider two popular choices for a Glock 19 MOS: the Trijicon RMR and the Leupold DeltaPoint Pro. While both are excellent options, they have different footprints and thus require different MOS mounting plates. The RMR might be preferred for its compact size and proven track record, while the DeltaPoint Pro might appeal to those prioritizing a larger viewing window. The choice often comes down to personal preference and intended use.
Conclusion: Making the Right Decision
Understanding the differences between the Glock MOS footprint and specific RDS footprints, like that of the Trijicon RMR, is essential for successful red dot integration. Careful consideration of your needs, research, and careful selection of both the optic and the correct mounting plate will guarantee a safe and reliable setup. Remember to consult your firearm's manual and the optic manufacturer's instructions for correct installation and safe operation.