Choosing a dovetail mount for your Glock lets you add a red dot without milling your slide or buying a new MOS model. This guide is for shooters who need a secure, reliable way to run an optic on a standard Glock, whether for competition, carry, or testing optics before committing to a permanent setup.
The mounts compared here replace the rear sight and provide a stable platform for RMR, RMSc, or Holosun red dots. Each option was selected for fit, durability, footprint compatibility, and ease of install.
If you’ve struggled with loose mounts or shifting zero, these picks solve those issues. We break down the strengths and trade-offs for each mount, so you can match the right plate to your Glock model and preferred optic.
Skip the guesswork and focus on what matters: repeatable zero, solid lockup, and the footprint your dot requires. Scan the key takeaways below, check the winner and runner-up, and use the buying guide to prioritize the features that count for your use case.
FAQs cover common questions about dovetail, Picatinny, and iron sight compatibility.
Our overall best pick: DPP Titanium Rear Sight Dovetail Mount Compatible with Glock →
| Product | Material | Optic Footprint | Profile Height | Warranty | |
|---|---|---|---|---|---|
| DPP Titanium Rear Sight Dovetail Mount Compatible with Glock | 6AL4V Titanium | Holosun 407K/507K, Osight K/S/SE, Shield RMS/RMSC, Romeo Zero | Ultra Low | Lifetime | See on Amazon |
| DPP Titanium Rear Sight Dovetail Mount Compatible with Glock | 7075-T6 Aluminum | RMR/SRO, Holosun 407C/507C/508T, Osight C/XR | Ultra Low | Lifetime | See on Amazon |
| Monstrum Dovetail Red Dot Mounting Plate for Glock Pistols | 6061 Aluminum | RMSc/407k/507k/K | Standard | Lifetime | See on Amazon |
| TSA® Rear Sight Dovetail Red Dot Optic Mount Plate | CNC Aluminum | RMSc (Holosun 407K/507K, Shield RMSc, Romeo Zero) | Low | None listed | See on Amazon |
| Monstrum Dovetail RMR, 407C/507C, XR | 6061 Aluminum | RMR, Holosun 407C/507C/508T | Ultra Low | Lifetime | See on Amazon |
DPP Titanium Rear Sight Dovetail Mount Compatible with Glock
Precision CNC machined from 6AL4V titanium, this mount offers superior durability and rigidity compared to aluminum plates. Installation is straightforward, especially with a sight pusher, and the mount sits ultra low, keeping the optic close to the slide and minimizing sight picture distortion.
The updated 30MOA design solves elevation adjustment issues, no shimming required for most optics. Fitment is tight and secure, holding zero through torture testing and repeated range sessions without sliding, breaking, or cracking.
The mount fits Glock 42, 19 Gen5, and 26 Gen4, though it may be slightly wider than the slide, matching the optic footprint for a clean look. Titanium construction prevents the tilt and instability seen in aluminum versions, but the mounting screws are weak and may need replacement for long-term reliability.
One reviewer questioned the titanium quality, but noted the mount is sturdy and functions as intended. Customer service is responsive, quickly resolving ordering mistakes.
Skip this if you need perfect cosmetic fit on narrow slides or expect flawless hardware out of the box; it excels for shooters who prioritize durability and secure mounting for RMSc optics.
Strengths
- 6AL4V titanium is tougher than aluminum
- Ultra low profile for clean sight picture
- Updated 30MOA design eliminates shimming
- Holds zero after torture testing and heavy recoil
- Customer service is fast and helpful
Trade-offs
- Mounting screws are low quality, may need replacement
- May be slightly wider than some Glock models
- Titanium quality is questioned in some reviews
DPP Titanium Rear Sight Dovetail Mount Compatible with Glock
This mount is precision CNC-machined from 7075-T6 aluminum, giving it almost double the strength of the standard 6061 plates found elsewhere. Installation is tight and requires a non-marring hammer or sight pusher, but once seated, it holds zero even after hundreds of rounds.
The ultra low-profile design keeps the optic close to the slide and is half the thickness of competing mounts, preserving the sight picture and minimizing snag risk for holster use or carry. The included steel Torx screws lock the optic securely, and the package comes with all the necessary hardware and tools, making the process accessible even for those without a gunsmith background.
Owners report flawless fitment with Glock 17, 22, and Springfield XD9, and the mount stands up to recoil and repeated range sessions without budging or losing alignment. Alignment with the Osight X remains stable, and the mount’s rigidity prevents buckling under pressure from sight pushers, a common failure point for softer aluminum plates.
The warranty is straightforward, offering a 30-day money-back guarantee and lifetime coverage, but the product name can be confusing as both aluminum and titanium versions are sold under the same listing, leading to mismatches if not double-checked before ordering. Skip this if you need tool-free installation or regularly swap optics, as the tight fit means removal is slow and may require specialized tools.
Strengths
- 7075-T6 aluminum is nearly twice as strong as 6061
- Ultra low profile keeps optic close to slide
- Locks zero even after hundreds of rounds
- Includes all hardware and tools
- Lifetime warranty and 30-day money-back guarantee
Trade-offs
- Tight fit requires hammer or sight pusher for installation
- Product name confusion between aluminum and titanium versions
- Not compatible with fake Trijicon RMRs
Monstrum Dovetail Red Dot Mounting Plate for Glock Pistols
Made from hard anodized 6061 aluminum, this plate fits Glock models 17 through 47 except MOS and Slimline variants. Installation requires a sight pusher, but the included tools and hardware simplify the process.
The mount’s fit is solid, and it holds zero well if installed per instructions and the expanding lugs are used. The plate saves significant money compared to competitors, making it ideal for range guns or plinker builds.
The plate installs into the dovetail slot, replacing the rear sight, and includes multiple screw sizes for different optics. Some slides (e.g., Canik TP9SF) require minor filing for proper fitment, and the mounting screws may not match every optic out of the box.
Issues arise if shortcuts are taken: skipping expanding lugs or failing to torque properly leads to loosening and side-to-side movement, but following the instructions avoids these problems. A raised bar on the bottom of the plate is not visible in pictures and may cause compatibility issues with certain aftermarket slides like Trybe.
Skip this if you want a plug-and-play solution for custom slides or expect perfect compatibility with every optic; it excels as an affordable, reliable option for standard Glock slides and RMSc footprint optics.
Strengths
- Very affordable compared to competitors
- Solid fit with correct installation
- Includes multiple screw sizes and tools
- Wide compatibility with RMSc footprint optics
- Lifetime guarantee
Trade-offs
- Requires sight pusher and careful installation
- May need minor filing for some slides
- Raised bar not shown in pictures complicates fitment with some aftermarket slides
TSA® Rear Sight Dovetail Red Dot Optic Mount Plate
The TSA mount is CNC-machined aluminum with a corrosion-resistant finish, keeping it lightweight and strong. Installation is straightforward, with included screws and a T10 hex key, and the plate sits lower than most dovetail mounts, preserving the sight picture.
It fits Glock standard models as well as Shadow Systems, Polymer80, ZEV, Lone Wolf, Faxon, and Alpha Shooting Sports slides, making it the most broadly compatible option in this lineup. Fitment is precise on Glock 17 Gen 3 and 19X, with the mount staying secure if thread locker is applied and torque specs are followed.
Care is needed with the set screws, as they can strip easily if overtightened, 7 inch lbs is recommended for set screws, 15 inch lbs for optic screws. The mount is strictly for RMSc footprint optics; buying the wrong plate (RMR/SRO vs RMSc) is a common mistake, so double-check before ordering.
A major flaw is the forward holes: one reviewer reports they are not threaded or sized for standard hardware, making optic mounting impossible for their Holosun. Skip this if you need guaranteed compatibility with every optic or expect flawless machining; it excels for those who want a low-profile mount for RMSc optics and aftermarket slides.
Strengths
- Fits both Glock and major aftermarket slides
- Low profile preserves sight picture
- Easy installation with included T10 tool
- Works with wide range of RMSc footprint optics
- Stays securely mounted when thread locker is used
Trade-offs
- Set screws can strip if overtightened
- Forward holes may lack threading or proper sizing for some optics
- Strictly RMSc footprint, wrong plate is a common ordering mistake
Monstrum Dovetail RMR, 407C/507C, XR
This plate is hard anodized 6061 aluminum and fits Glock models 17-47 (non-MOS), offering RMR, Holosun 407C/507C/508T compatibility. Its 2mm width keeps the optic close to the slide, supporting faster target acquisition and better visibility.
Installation takes under five minutes with a sight pusher, and the package includes every possible screw length for optic mounting. The mount holds zero for several hundred rounds and survives heavy recoil, including.460 Rowland conversion, but the aluminum is soft, screws can strip or shear out after only 50 rounds if overtightened, and included screws may be too short or mismatched for some optics.
The plate sits higher than milled slides, impacting the sight picture and co-witnessing, but it is much cheaper than slide milling. The best use is for quick trial runs or temporary setups; it is not recommended for permanent installation or high-volume shooting due to the softness of the aluminum and potential screw failures.
Skip this if you want a mount for competition or duty use; it is best for those trying out red dots before committing to slide milling.
Strengths
- Ultra low profile keeps optic close to slide
- Quick installation with sight pusher
- Includes multiple screw lengths
- Holds zero for hundreds of rounds
- Fits wide range of Glock models
Trade-offs
- Soft aluminum can strip or shear screws
- Mount sits high compared to milled slides
- Included screws may be too short for some optics
01Footprint compatibility
Check that the mount matches your optic’s footprint, such as RMR, RMSc, or Holosun K/C. Mixing footprints leads to loose fit or unusable screw holes. Always confirm before purchase, especially with aftermarket slides.
02Material and durability
Titanium offers the best resistance to recoil and deformation, holding zero under heavy use. Aluminum is lighter and cheaper but may loosen or bend over time, especially with frequent shooting. Avoid low-grade materials for carry or competition setups.
03Zero retention
A good mount should maintain zero after repeated firing and handling. Look for tight dovetail tolerances and secure screw fit. Loose mounts cause wandering zero and unreliable shot placement.
04Profile and height
Slim mounts sit lower and are less likely to snag, improving concealment and sight picture. High-profile plates may block co-witnessing or complicate holster fit. Check height specs before buying, especially if you want to add backup iron sights.
05Ease of installation
Choose a mount that installs with basic tools and clear instructions. Overly complicated plates can damage the slide or optic if installed incorrectly. Avoid mounts requiring extensive fitting or modification unless you have gunsmith experience.