Choosing the 6 Best Compact Sights For Glock 19 involves more than simply finding the smallest optic available. The sight needs to complement the pistol’s compact dimensions while offering a useful viewing window, dependable illumination, appropriate reticle size, and a mounting system that works with your particular slide.
THE 6 Best Compact Sights For Glock 19 are available in both open- and enclosed-emitter designs. Open-emitter models can offer a slimmer profile and relatively low weight, while enclosed-emitter sights protect the emitter from environmental contamination.
6 Best Compact Sights For Glock 19
1. Holosun HS507C X2 2 MOA Dot & 32 MOA Circle
The Holosun HS507C X2 2 MOA Dot & 32 MOA Circle is a versatile compact pistol optic that works particularly well when you want multiple reticle choices. It uses the RMR footprint, making it compatible with the appropriate Glock MOS plate. The combination of a 2 MOA dot and 32 MOA circle gives users the option of using a simple dot or a circle-dot configuration.
One of its biggest advantages is its relatively compact size without making the viewing window excessively small. The optic has an approximately 0.91 × 0.63-inch window and is listed with both solar and battery-powered operation. These characteristics make it a flexible choice for a Glock 19 where maintaining a reasonable balance between optic size and viewing area is important.
The selectable reticle is useful because different users may prefer different aiming presentations. The 2 MOA dot provides a precise aiming point, while the larger circle can make the reticle easier to locate. This flexibility also makes the 507C X2 suitable for people who want an optic that can be configured according to their preferences.
Another useful feature is its solar-assisted power system. Under suitable lighting conditions, the solar panel can supplement the battery, while the battery provides operation when ambient light is insufficient. The design also incorporates brightness controls and multiple reticle configurations, giving the user considerable control over the sight picture.
For a Glock 19 MOS, the main consideration is the mounting plate. The 507C X2 uses the RMR footprint, so it needs the appropriate RMR-compatible plate on an MOS slide.
Features
- RMR footprint
- 2 MOA dot and 32 MOA circle
- Solar-assisted operation
- Multiple reticle configurations
- Compact open-emitter design
Pros
- Flexible reticle options
- Solar backup
- Good balance of size and window
- Widely supported RMR footprint
Cons
- Open emitter can expose the emitter to debris
2. Trijicon RMR Type 2 3.25 MOA
The Trijicon RMR Type 2 3.25 MOA is one of the most established compact pistol optics in the RMR footprint. Its compact housing makes it a natural candidate for the Glock 19, particularly for users who prioritize a proven optic architecture rather than a large viewing window.
The 3.25 MOA dot provides a straightforward aiming point without taking up excessive space in the window. Compared with very large-dot sights, it offers a more defined aiming point, while remaining large enough to be visible in a variety of normal lighting conditions.
The RMR’s footprint is another significant advantage for Glock 19 owners. On a Glock 19 MOS, the RMR footprint is supported through the appropriate MOS plate. The same plate family can also support other RMR-pattern optics, giving users considerable flexibility when selecting or changing optics.
Its compact construction is particularly suited to a pistol that may be carried or used regularly. The RMR Type 2 does not attempt to provide the largest possible window; instead, its design emphasizes a relatively compact package and a durable housing.
The primary trade-off is its open-emitter design. Unlike an enclosed optic, the emitter is exposed, so the optic does not provide the same physical protection against environmental contamination. For users who specifically want an enclosed emitter, an option such as the Aimpoint ACRO P-2, Steiner MPS, or Holosun EPS Carry may be more appropriate.
Features
- RMR footprint
- 3.25 MOA dot
- Compact open-emitter design
- Rugged aluminum housing
- Battery-powered operation
Pros
- Compact dimensions
- Established RMR mounting pattern
- Simple 3.25 MOA reticle
- Suitable for Glock MOS with correct plate
Cons
- No multi-reticle system
3. Aimpoint ACRO P-2 3.5 MOA
The Aimpoint ACRO P-2 3.5 MOA takes a different approach from the open-emitter optics on this list. Instead of leaving the LED emitter exposed, it uses a fully enclosed housing. This design protects the emitter from outside contamination and gives the optic a distinctive compact enclosed profile.
The ACRO P-2 uses its own mounting interface rather than the RMR or RMSc footprint. On a Glock 19 MOS, an appropriate ACRO-compatible plate is therefore required. The important point is that an optic being compact or enclosed does not automatically make it compatible with every other enclosed-emitter mounting system.
Its 3.5 MOA dot provides a simple aiming point without introducing multiple reticle options. For users who prefer a straightforward sight picture, this can be an advantage because there are fewer reticle elements competing for attention.
The enclosed design also changes the optic’s overall dimensions compared with slim open-emitter sights. It is somewhat more substantial in appearance, but that additional housing surrounds the emitter and provides environmental protection that open designs cannot provide.
The ACRO P-2 is therefore an interesting option for Glock 19 owners who specifically want an enclosed compact optic. The key consideration is ensuring that the Glock’s mounting system has the correct ACRO-compatible plate and that the installation follows the optic and plate manufacturers’ specifications.
Features
- Enclosed-emitter design
- 3.5 MOA dot
- ACRO mounting interface
- Compact enclosed housing
- Battery-powered operation
Pros
- Enclosed emitter
- Simple reticle
- Compact enclosed design
- Strong mounting ecosystem
Cons
- Higher price category
4. Holosun EPS Carry
The Holosun EPS Carry is designed around a slim enclosed-emitter format. It is particularly interesting for Glock 19 users who want the environmental protection of an enclosed emitter without moving to a substantially larger full-size enclosed optic.
The EPS Carry uses the Holosun K/RMSc-family mounting pattern. On a Glock 19 MOS, a suitable adapter plate is required. The exact plate should be selected according to the specific Glock generation and slide configuration because Glock’s optic mounting systems differ between models.
According to current comparison data, the EPS Carry has a window of approximately 0.77 × 0.58 inches. That gives it a compact sight picture while keeping the optic’s overall dimensions relatively restrained.
The enclosed construction is its defining characteristic. With the emitter contained inside the housing, the sight avoids the exposed-emitter configuration found on optics such as the 507C X2 and Defender-CCW. This can be particularly useful for users who want an optic that is less exposed to dirt and debris.
Another benefit is its relatively slim profile compared with many full-size enclosed pistol optics. That makes the EPS Carry worth considering when the objective is to keep the Glock 19’s optic package compact while still using an enclosed-emitter design.
Features
- Enclosed emitter
- Holosun K/RMSc-family footprint
- Approximately 0.77 × 0.58-inch window
- Compact housing
- Battery-powered operation
Pros
- Enclosed emitter
- Slim compact design
- Good window-to-size balance
- Suitable for compact pistols
Cons
- Requires the correct mounting plate on Glock MOS
5. Vortex Defender-CCW 3 MOA
The Vortex Defender-CCW 3 MOA is another compact option designed around the needs of smaller pistol platforms. Its open-emitter configuration allows Vortex to keep the sight relatively compact while providing a useful viewing window.
The optic uses the RMSc footprint. Current specifications list a window measuring approximately 0.78 × 0.63 inches, which provides a reasonable sight picture for an optic of its size.
The 3 MOA dot is a middle-ground reticle size. It is not as fine as a very small competition-oriented dot, nor as large as some close-range-oriented reticles. For a compact pistol such as the Glock 19, this gives the optic a straightforward and uncomplicated aiming point.
Its RMSc mounting system also makes it attractive for users who want a compact footprint rather than a larger RMR-pattern optic. However, Glock 19 MOS owners should still confirm the exact plate required for their pistol before purchasing.
The main trade-off is the open-emitter design. The emitter is exposed rather than enclosed, so users specifically looking for protection from environmental contamination may prefer the EPS Carry or another enclosed option.
Features
- 3 MOA dot
- RMSc footprint
- Open-emitter design
- Approximately 0.78 × 0.63-inch window
- Compact pistol configuration
Pros
- Compact size
- Simple 3 MOA dot
- RMSc footprint
- Relatively generous window for its size
Cons
- No enclosed-emitter protection
6. Steiner MPS 3.3 MOA
The Steiner MPS 3.3 MOA is another enclosed-emitter optic that can be paired with a Glock 19 through the appropriate mounting solution. Its compact rectangular housing surrounds the emitter and gives the optic a distinctive enclosed configuration.
The MPS uses the same ACRO mounting interface as the Aimpoint ACRO family. That means an ACRO-compatible Glock MOS plate can provide the interface between the pistol and optic. The shared mounting pattern can be useful for users who want flexibility between ACRO-pattern enclosed optics.
Its 3.3 MOA dot is relatively simple compared with multi-reticle sights. The straightforward reticle can make the sight picture less complicated, while still providing a reasonably sized aiming point for a compact pistol.
The enclosed construction is one of its strongest characteristics. The housing surrounds the emitter rather than leaving it exposed, giving the MPS the physical configuration many users seek when environmental protection is a priority.
The primary consideration is size. Although compact relative to many full-size pistol optics, the MPS is still a substantial enclosed optic compared with slim open-emitter sights. For a Glock 19 owner, it is therefore worth comparing the desired level of environmental protection against the optic’s overall size and mounting requirements.
Features
- Enclosed-emitter design
- 3.3 MOA dot
- ACRO footprint
- Compact rectangular housing
- Durable construction
Pros
- Enclosed emitter
- Simple reticle
- ACRO-compatible mounting system
- Robust construction
Cons
- More substantial than slim open optics
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Factors to Consider When Choosing the 6 Best Compact Sights For Glock 19
Mounting Footprint
Footprint compatibility should be checked before anything else. Glock MOS slides use an adapter-plate system, so the optic and plate must match. The RMR-pattern Holosun 507C and Trijicon RMR, for example, use an RMR-compatible plate, while ACRO-pattern optics require an ACRO plate.
Open vs. Enclosed Emitter
Open-emitter sights such as the 507C X2 and Defender-CCW leave the emitter exposed. Enclosed designs such as the ACRO P-2, EPS Carry, and MPS surround the emitter with the optic housing. The choice therefore involves balancing size and design preference against emitter protection.
Window Size
A larger window can make it easier to see the reticle and target through the optic, but increasing window dimensions can also increase the overall size of the sight. Compact optics therefore involve a balance between viewing area and overall dimensions.
Reticle Size
Reticle size affects the appearance of the aiming point. The optics on this list range from 2 MOA to 3.5 MOA dots, with the 507C X2 additionally offering a 32 MOA circle. Glock notes that larger dots can be easier to see at close range, while smaller dots can provide a more precise aiming point.
Size and Weight
A Glock 19 is already a relatively compact pistol, so a large optic can change its overall profile. Compare the optic’s length, height, width, and weight rather than looking only at the manufacturer’s window dimensions.
FAQs about the 6 Best Compact Sights For Glock 19
Can you put a compact red dot on a Glock 19?
Yes. An optics-ready Glock 19 can accept a variety of compact red dots when the correct mounting interface is used. Glock’s MOS system uses adapter plates for numerous optic footprints.
Does the Holosun 507C X2 fit the Glock 19 MOS?
Yes. The 507C X2 uses the RMR footprint and can be installed on a Glock 19 MOS with the appropriate RMR-compatible adapter plate.
What is the difference between an open and enclosed pistol optic?
An open-emitter optic leaves the emitter exposed, while an enclosed-emitter optic surrounds it with the optic housing. The latter provides additional physical protection from environmental contamination.
Conclusion
The 6 Best Compact Sights For Glock 19 covered here offer different approaches to equipping a Glock 19. Before purchasing, verify the exact Glock generation, slide configuration, optic footprint, adapter plate, screw specifications, and desired sight height. Glock’s mounting systems have changed between generations, so compatibility should always be confirmed using the specific pistol and optic manufacturer’s current specifications