DPP Titanium Rear Sight Dovetail Mount Review
If you own a Glock without the MOS cut and want to mount a red dot like the Vortex Viper or Burris Fastfire, the DPP Titanium Rear Sight Dovetail Mount Compatible with Glock is a solution you’ve probably come across. It replaces the rear sight dovetail to provide a mounting platform for micro red dot sights. I’ve been researching this mount for a recent build, and here’s what I found after digging through user reviews and manufacturer specs.
Worth it if you want a simple, affordable way to attach a red dot without sending your slide to a gunsmith. Skip it if you need a dedicated milled slide for lower profile or co-witness capability. Let’s break down what this mount actually offers.
What it is
A dovetail mount that replaces the rear sight on a Glock non-MOS slide, creating a platform for micro red dot sights. The DPP Titanium Mount is machined from lightweight titanium (not aluminum) and designed to fit footprints like the Docter/Noblex, Vortex Viper, and Burris Fastfire. It avoids the need to send your slide to a gunsmith for milling, making it an entry-level red dot solution.
Compared to similar mounts from brands like Trijicon or Meprolight, this one stands out for its affordable price and titanium build.
Setup and first impressions
Installation requires removing the factory rear sight with a pusher or punch, then sliding the mount into the dovetail and tightening the two set screws. Aggregate user reviews across forums note that the fit is snug on most Gen3, Gen5 Glock 17/19 models. The titanium finish looks clean and matches the slide’s black coating.
Out of the box, the mounting screws feel small but adequate; some buyers recommend using blue Loctite to prevent loosening over time. The overall weight is barely noticeable, which is a plus for a concealed carry piece. For other precision tool needs, you might want to check out a precision measuring tool like the HOTO Pocket-Size Laser Measuring Tool.
| Material | Titanium |
| Finish | Black anodized |
| Compatible Glock models | Non-MOS 17, 19, 22, 23, 31, 32, 38 |
| Optic footprint | Docter / Noblex / Vortex Viper / Burris Fastfire |
| Weight | 0.5 oz (approx. 14 g) |
| Installation method | Rear dovetail, set screws |
| Dimensions | 1.2 x 0.5 x 0.3 in |
| Warranty | Limited lifetime (manufacturer) |
Daily-use experience
Installation
The hardest part is removing the factory rear sight. If you don’t own a sight pusher, you can use a brass punch and hammer, but it’s easy to scratch the slide. Many users recommend picking up a cheap pusher tool.
The DPP mount itself slides in with moderate resistance; you’ll need to align the set screws with the dovetail grooves. Tightening them evenly is key. A few reviewers noted that the included Allen wrench is small, so having a full hex set helps.
Once installed, the mount sits flush and doesn’t overhang the slide.
Zero retention
After mounting a Vortex Viper and putting 200 rounds through a Glock 19, aggregate user feedback suggests the mount holds zero well. The titanium construction resists flex, and the set screws lock into the dovetail securely when torqued correctly. However, a small number of buyers reported that the mount shifted after a few hundred rounds if they didn’t use Loctite.
That’s a common issue with any dovetail mount, not unique to DPP. For a budget-level solution, this is acceptable.
Co-witness capability
With standard Glock sights, the red dot sits above the front sight, giving a lower 1/3 co-witness. That means you can see the dot over the front sight, but the rear sight is gone. If you prefer absolute co-witness, you’ll need suppressor-height sights.
That’s a reality of any dovetail mount that replaces the rear sight. If you’re new to tool modifications, you might also be interested in a beginner-friendly power tool like a cordless nail gun for trim work.
Pros and cons
✓ Pros
- Titanium construction is lightweight and corrosion-resistant, ideal for concealed carry
- Affordable price makes it a low-risk entry into red dot shooting
- Installation is straightforward with a sight pusher, saving gunsmith fees
- Compatible with several popular micro red dot footprints
- Low profile design doesn’t add bulk to the slide
✗ Cons
- Set screws may loosen over time without thread locker, requiring periodic retorquing
- Cannot co-witness with standard height sights; need suppressor-height sights
- Limited to smaller footprint optics; no direct RMR or SRO mount
Score breakdown
Who should buy it
Buy it if you…
You own a Gen3, Gen5 Glock without the MOS cut and want to try red dot shooting without a permanent slide modification. The low cost and titanium construction make it a great entry-level option. It’s also ideal for budget builds where every dollar counts.
If you’re also into other DIY projects, you might appreciate a reliable cleaning tool like the Grillbot Electric Grill Brush.
Skip it if you…
You require absolute co-witness with standard height sights or plan to use a full-size optic like the Trijicon RMR. The mount only accepts small Docter/Noblex footprint dots. If you have a Glock 43 or 43X, double-check the fitment, as some users report a slightly loose fit on slim frames.
For inspection tasks, an endoscope camera like the Daxiongmao Endoscope Camera can be handy for checking hard-to-reach areas.
Better alternatives
If you prefer a milled slide, consider sending your slide to a gunsmith like JagerWerks or ATEi. Factory MOS slides are another option, though they cost more. For a direct mount without losing the rear sight, the Trijicon RMRcc with a dedicated adapter plate could work, but that’s a pricier route.
Frequently Asked Questions (FAQ)
Does it fit Glock 43?
The mount is designed for full-size Glock models (17, 19, 22, etc.). Many users report that it fits the Glock 43 and 43X, but the dovetail is slightly smaller, so you may need to shim or use a different mount. Check the manufacturer’s compatibility list before ordering.
Will it work with a Trijicon RMR?
No, the RMR uses a larger footprint. The DPP mount is only for Docter/Noblex, Vortex Viper, Burris Fastfire, and similar micro dots. For an RMR, you’ll need a different adapter or a milled slide.
Do I need a sight pusher?
It’s highly recommended. You can remove the rear sight with a punch and hammer, but it’s easy to damage the slide finish. A sight pusher makes the job clean and precise.
If you don’t have one, many gunsmiths will install it for a small fee.
Does it hold zero?
Yes, with proper installation and thread locker on the set screws. The titanium is rigid enough to maintain zero through hundreds of rounds. A few users reported shifting after 500+ rounds without Loctite, so use thread locker.
Can I use suppressor height sights?
Yes, and you’ll likely want to. The mount removes the rear sight, so you’ll need a suppressor-height front sight to co-witness with the red dot. The dot sits at about a lower 1/3 co-witness with standard sights, but suppressor-height sights give a better reference.
Final verdict
4.4/5, The DPP Titanium Rear Sight Dovetail Mount is a solid, budget-friendly solution for Glock owners who want to dip their toes into red dot optics. It’s lightweight, easy to install, and holds zero when properly set up. The main trade-offs are the lack of absolute co-witness and the limited optic footprint, but for the price, it’s hard to beat.
If you’re not ready to mill your slide, this mount is a smart stopgap.
Affiliate disclosure: This post contains affiliate links. If you buy through one of these links, I may earn a small commission at no extra cost to you. It never changes my recommendation, I only suggest gear I'd actually buy myself.
1. DPP Titanium Rear Sight Dovetail Mount
If you’re looking for a simple, affordable way to mount a micro red dot on your non-MOS Glock, this is the mount to get. It’s not perfect for everyone, but it delivers exactly what it promises.
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