Shield RMS and SMS on CZ Shadow 2: A Guide to Dovetail Mount Compatibility
Shield RMS and SMS on CZ Shadow 2: A Guide to Dovetail Mount Compatibility
Introduction: Pairing Your Shield RMS/SMS with a CZ Shadow 2
The CZ Shadow 2 is renowned for its exceptional shooting dynamics right out of the box, making it a top choice for competitors and enthusiasts. Many owners look to enhance its capabilities further by adding a red dot sight. If you own a standard (non-Optics Ready) Shadow 2 and have your sights set on a compact optic like the Shield RMS or Shield SMS series, you're likely wondering about compatibility. The good news is you absolutely can pair these optics with your standard Shadow 2 using a specific dovetail mount. This guide will focus specifically on the Shield RMS SMS CZ Shadow 2 dovetail mount combination, explaining compatibility, identifying the correct mounts, and covering installation basics.
The Popular Choice: Shield RMS/SMS Series Red Dots
Shield Sights, a UK-based company, are known for being pioneers in compact, lightweight pistol red dots. Their RMS and SMS series, along with the updated RMSc models, were designed to fit smaller, slimmer handgun slides, often allowing for a lower mounting height compared to larger optics. Their compact size and proven track record have made them a popular choice not just for carry pistols, but also for performance-oriented firearms like the CZ Shadow 2 where shooters appreciate a less bulky optic atop the slide.
Understanding the Shield RMSc Optic Footprint
The crucial piece of information when pairing a Shield RMS, Shield SMS, or Shield RMSc (and many other compatible optics) with a mount is the "Shield RMSc footprint." This term, derived from Shield's compact optics, refers to a specific pattern of screw holes, and sometimes indexing recesses or lugs, found on the base of the red dot. Many other red dot manufacturers have adopted this standard for their own compact or "micro" pistol optics. When you're looking for a mount for your Shield red dot on a CZ Shadow 2 dovetail mount, you need a mount that is explicitly cut for the Shield RMSc footprint.
The CZ Shadow 2 Standard Slide & Dovetail Mounts
As discussed in our article on installing a red dot on a standard CZ Shadow 2, the standard model lacks the factory Optics Ready cut found on some newer variants. The most common method to add a red dot without permanent slide milling is by using a dovetail mount. This adapter replaces the rear iron sight, fitting securely into the slide's dovetail slot and providing a flat platform for an optic. This allows owners of a CZ Shadow 2 non OR Shield red dot setup.
Finding THE Right Dovetail Mount for Shield RMS/SMS on CZ Shadow 2
This is where getting the compatibility right is critical. You need a dovetail mount made specifically for the CZ Shadow 2 *and* designed with the Shield RMSc footprint on its top surface. Purchasing a generic dovetail mount or one intended for a different pistol model will not work correctly or safely.
Why Specificity Matters: Not All Mounts Fit All Optics
Even if a mount fits the CZ Shadow 2's dovetail, if its top surface isn't machined to match the Shield RMSc footprint (screw pattern, lug placement), your Shield optic won't attach correctly or securely. The base shape and screw hole alignment must be perfect. (A visual comparison of RMSc vs RMR vs Docter footprints would be excellent here, showing the different base shapes with lug and screw hole positions highlighted).
Identifying Compatible CZ Shadow 2 Dovetail Mounts
Look for product descriptions explicitly stating compatibility with "CZ Shadow 2" and "Shield RMSc footprint," "Shield RMS/SMS," or listing specific compatible optics like "Holosun K-series." Reputable manufacturers or retailers specializing in CZ parts are the best sources. For example, CZ Parts lists a mount specifically for the CZ Shadow 2 dovetail mount for Shield RMS/SMS/RMSc. OuterImpact also offers their AMP mount with a multiple-footprint adapter plate including RMSc for the CZ Shadow 2.
Other Red Dots Using the Shield RMSc Footprint
While the footprint is named after Shield, many other manufacturers use it for their compact optics. This means getting an Shield RMSc dovetail mount for your CZ Shadow 2 opens up a wide selection of optics:
Holosun K-Series (407K/507K/EPS Carry)
Holosun's popular K-series optics (like the 407K, 507K, and enclosed EPS Carry) are fantastic options and generally share the Shield RMSc footprint. They are a very common pairing with Shield RMSc dovetail mounts on various pistols due to their features and battery life. The EPS Carry, being an enclosed emitter, offers greater resistance to dust and debris compared to open emitter optics like the standard Shield or most Holosun K-series. If you're considering a Holosun 407K CZ Shadow 2 dovetail or Holosun 507K CZ Shadow 2 dovetail setup, an Shield RMSc footprint mount is what you need.
Swampfox Sentinel
Swampfox's compact Sentinel red dot also uses the Shield RMSc footprint.
Other Compatible Micro Optics
Other brands that use this footprint for some models include SIG Sauer (RomeoZero), Crimson Trace (CTS-1550), ADE Advanced Optics, and more. Always verify the specific model's footprint before purchasing.
Important Notes on Screw Length
While the footprint matches, screw length can vary slightly between optic brands and mounts. It is CRITICAL that you check the screw length when mounting your optic. The screw should thread securely into the mount without being too long (potentially hitting parts of the slide underneath) or too short (not having enough thread engagement for durability). Use the screws included with the mount or optic system that are verified to work for this specific pairing. If needed, screws may need careful trimming.
Benefits of This Pairing on Your CZ Shadow 2
Choosing a Shield RMS/SMS or compatible Shield RMSc optic with a dovetail mount offers specific advantages on the CZ Shadow 2:
Compact Size
Shield RMSc footprint optics are smaller and often lighter than larger footprints like the Trijicon RMR. This results in less added weight on the reciprocating slide, potentially having a minimal impact on the CZ Shadow 2's already superb balance and cycle speed compared to bulkier optics. For CZ traditionalist owners adding an optic via a dovetail mount rather than OR/milling, maintaining the pistol's streamlined profile can be particularly appealing.
Potential for Lower Mount Height (Relative to Some)
While any optic on a dovetail mount sits higher than a milled or factory OR setup, the compact nature of Shield RMSc optics can sometimes allow for a slightly lower overall height on the slide compared to using a larger optic (like an RMR) on a different universal dovetail adapter, though this varies by specific mount design.
Wide Availability of Optic Options
Since many brands use the Shield RMSc footprint, once you have the compatible dovetail mount, you have a broad selection of red dots to choose from at various price points and with different features (dot size, shake-awake, battery type, open vs. enclosed emitter).
Installation Overview: Mounting Your Shield RMS/SMS (or Compatible)
The installation process involves two main parts: installing the dovetail mount onto the slide (replacing the rear sight) and then installing the red dot optic onto the mount.
Tools Needed (Briefly)
In addition to the tools needed for the dovetail mount itself (sight pusher recommended), you will need small hex wrenches/Torx bits for the optic screws (often included with the optic/mount), an inch-pound torque wrench, and blue thread locker.
Key Installation Steps & Tips (Emphasizing Torque & Thread locker)
Once the dovetail mount is secured to your slide, clean the mounting surface and the optic base. Apply a tiny drop of blue thread locker to your optic screws. Carefully place the optic onto the mount, aligning any lugs. Insert the screws and gently hand-tighten them. Then, using your inch-pound torque wrench, tighten the screws incrementally in a crisscross pattern to the specific torque value recommended by your RED DOT MANUFACTURER (typically 15-20 inch-pounds for Shield RMSc optics). Verify screw length and proper thread engagement. Ensure the optic sits flush and secure.
Zeroing Your Shield Red Dot on Your Shadow 2
After installation, you must zero your new red dot setup at the range. This involves firing groups of shots and adjusting the optic's windage and elevation turrets until your point of aim (where the dot is) matches your point of impact at a specific distance (e.g., 15 or 25 meters). This is essential for accuracy; installation alone does not guarantee the optic is zeroed.
Considering the Trade-Offs (Briefly Mentioning Rear Sight)
It's important to remember that using a dovetail mount replaces your factory rear sight. This setup typically results in no co-witness with your factory front sight. While modern red dots are reliable, this means you generally won't have traditional iron sights as a backup if your optic fails.
Comparing RMSc to Other Footprints (Brief Mention & Link)
The Shield RMSc footprint is just one option for mounting a red dot on a CZ Shadow 2 dovetail mount. Other common footprints include the Vortex Venom/Docter footprint and the larger RMR footprint. Your choice of mount will depend on which optic footprint you select.
Common Questions About Shield RMS/SMS on CZ Shadow 2 Dovetail
Here are some specific questions often asked about pairing Shield RMS/SMS or compatible Shield RMSc optics with a CZ Shadow 2 dovetail mount:
Are Shield RMS and Shield RMSc the same footprint?
Yes, the Shield RMS, Shield SMS, and Shield RMSc series optics generally share the compact "Shield RMSc" footprint, which is commonly used by many other red dot manufacturers for their compact pistol optics (like Holosun K-series).
Will a Shield RMS/SMS optic clear the extractor on my CZ Shadow 2?
Yes, dovetail mounts for the CZ Shadow 2 specifically designed for the Shield RMSc footprint are engineered to position the optic forward or high enough to clear the slide's extractor and other moving parts during cycling.
Do I need special screws to mount a Holosun K-series onto an Shield RMSc dovetail mount for the Shadow 2?
While Holosun K-series use the Shield RMSc footprint, the included screws may differ from those with a Shield optic. Always check that the screw length is correct (not too long, not too short) and use the screws provided with the mount or optic that are verified for that pairing. Thread pitch must also match.
Can I co-witness my iron sights with a Shield RMS/SMS on a CZ Shadow 2 dovetail mount?
It is highly unlikely you will achieve usable co-witness with factory height Shadow 2 sights when using a Shield RMS/SMS on a dovetail mount. The optic sits relatively high on the adapter plate. You would typically have no co-witness or potentially a very low 1/3 co-witness if using exceptionally tall aftermarket front sights, but there is no rear sight remaining.
Is the Shield RMSc footprint common for CZ Shadow 2 dovetail mounts?
Yes, the Shield RMSc footprint is one of the most common compatibility standards for dovetail red dot mounts made specifically for the CZ Shadow 2 (and other CZ 75 series pistols), alongside the Vortex Venom/Docter footprint and sometimes RMR (often via a sub-plate on the dovetail mount).
What's the torque spec for mounting a Shield red dot?
You should always follow the red dot manufacturer's specific recommended torque value, usually found in the optic's manual. This is typically very low, often between 15-20 inch-pounds for compact pistol red dots like the Shield series or Holosun K-series. Always use a torque wrench.
Conclusion: A High-Performance Pairing for Your Shadow 2
For owners of a standard CZ Shadow 2 looking to add a red dot sight without permanent modification, pairing a Shield RMS/SMS or other Shield RMSc footprint optic with a dedicated dovetail mount is a popular and effective solution. This combination offers a compact, lightweight optic option with a wide array of compatible red dots to choose from. By understanding the crucial role of the Shield RMSc footprint and identifying a mount specifically designed for the CZ Shadow 2, you can confidently select the right components. Proper installation using correct torque value and blue thread locker will ensure your red dot stays securely mounted, allowing you to enjoy enhanced speed and accuracy from your high-performing CZ Shadow 2.
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