Skip to content
Trijicon RMR Type 2 – Best overall for duty and defensive useHOLOSUN 507C – Best value with advanced reticle optionsAimpoint ACRO P-2 – Best enclosed-emitter opticTrijicon SRO – Best competition and range opticHOLOSUN EPS Carry – Best low-profile enclosed carry opticEOTECH EFLX – Best large-window alternative
Footprint: RMRDot Sizes: 1 MOA, 3.25 MOA, 6.5 MOABattery: CR2032Battery Life: Up to 4 yearsWeight: 1.2 ozHousing: Forged aluminum Industry-leading durabilityProven recoil resistanceExcellent battery lifeLarge aftermarket support Bottom battery designSlight blue lens tintSmaller window than newer competitors
Footprint: RMRDot Sizes: 2 MOA dot, Circle-Dot MRSBattery: CR1632Solar Backup: YesHousing: 7075 aluminumWeight: 1.5 oz Excellent valueMulti-reticle systemSide battery trayStrong durability Slightly bulkier than RMRMore controls to manage
Footprint: ACRODot Size: 3.5 MOABattery: CR2032Battery Life: 50,000 hoursFully enclosed emitterWaterproof construction Outstanding environmental protectionExceptional battery lifeHighly durable housingMinimal emitter contamination Larger profileHigher costRequires dedicated footprint
Footprint: RMRDot Sizes: 1 MOA, 2.5 MOA, 5 MOABattery: CR2032Top-loading batteryWeight: 1.6 oz Massive viewing windowFast target acquisitionTop battery accessExcellent glass quality Less rugged than RMRLarger housing profile
Footprint: K-SeriesMulti-reticle optionsEnclosed emitterSide battery trayWeight: 1 oz Compact sizeEnclosed designExcellent battery accessClear glass Smaller window than full-size opticsRequires footprint planning
Footprint: DeltaPoint ProDot Sizes: 3 MOA or 6 MOATop battery accessAluminum housingLarge viewing area Large windowTop battery compartmentExcellent glass clarityEasy controls
More
Share
Explore
6 Best Red Dot for Glock 19 Gen 2 in 2026: Mounting & Compatibility
From budget-friendly to high-end: Finding the perfect red dot for your specific shooting needs in 2026.
Best Red Dot for Glock 19 Gen 2 selection is more complicated than it first appears because the Gen 2 Glock 19 was never designed around modern optics. Unlike newer MOS models, the Gen 2 slide requires either custom milling, a dovetail mounting plate, or a replacement slide to accommodate a red dot. That makes footprint compatibility, deck height, and mounting durability just as important as optical performance.
After evaluating durability, window size, emitter design, recoil resistance, battery systems, and mounting flexibility, I narrowed the field to six optics that work exceptionally well on Glock 19 Gen 2 pistols. Some excel for concealed carry, others for duty use, and a few offer outstanding value without sacrificing reliability. The goal is simple: find an optic that complements the Glock 19's balance while maintaining dependable performance through thousands of rounds.
Top Product List: Best Red Dot for Glock 19 Gen 2
Trijicon RMR Type 2
The Trijicon RMR Type 2 remains the benchmark pistol red dot for hard-use applications. Its forged housing, proven electronics, and exceptional durability make it one of the safest choices for a Glock 19 Gen 2 slide milling project.
Specifications
Pros
Cons
My Hands-On Notes
The RMR Type 2 handles recoil impulse exceptionally well. I have seen these survive round counts that destroy lesser optics. Button tactility remains positive even with gloves. The lens tint is noticeable but rarely distracting outdoors. Parallax shift is minimal within realistic defensive distances.
The deck height allows excellent co-witness options when paired with suppressor-height sights. Emitter occlusion can occur in mud or snow due to the open-emitter design, but this is true of most traditional pistol dots.
What People Say Online
Most shooters still regard the RMR as the gold standard for duty use. Its reputation for surviving slide-mounted abuse continues to dominate discussions among law enforcement and defensive shooters.
Mounting Clarity
A Gen 2 Glock requires either slide milling for the RMR footprint or an aftermarket optics-ready slide. Dovetail mounts work but are generally less durable.
HOLOSUN 507C
The 507C combines excellent performance, multiple reticle options, and outstanding value. It uses the RMR footprint, making it one of the easiest optics to install on a milled Glock 19 Gen 2.
Specifications
Pros
Cons
My Hands-On Notes
The side-loading battery tray is a major advantage because it eliminates the need to remove the optic during battery changes. Button feel is crisp and easy to use with gloves. The lens tint is slightly greener than the RMR but remains clear.
Parallax performance is excellent for practical shooting distances. Window distortion is minimal, and recoil handling has proven reliable through sustained range sessions.
What People Say Online
The 507C is frequently recommended as the best balance of features and cost. Users consistently praise the Circle-Dot reticle for faster acquisition.
Mounting Clarity
Because it shares the RMR footprint, any Glock 19 Gen 2 slide cut for an RMR will also accept the 507C.
Aimpoint ACRO P-2
The ACRO P-2 transformed the enclosed-emitter pistol optic market. For shooters who prioritize reliability in harsh environments, it is among the strongest options available.
Specifications
Pros
Cons
My Hands-On Notes
The enclosed design eliminates concerns about snow, lint, mud, or water blocking the emitter. The battery compartment is easy to access and well sealed. Controls remain tactile even while wearing gloves.
Parallax is very well controlled, and the optic tracks consistently under heavy recoil. The window is smaller than an SRO, but the protective housing inspires confidence.
What People Say Online
The ACRO P-2 has become extremely popular among professional users who need maximum reliability in adverse conditions.
Mounting Clarity
The ACRO requires a dedicated ACRO slide cut or adapter plate. A custom-milled Glock 19 Gen 2 slide is the preferred solution.
Trijicon SRO
The SRO prioritizes speed. Its huge circular window makes target acquisition remarkably fast and forgiving.
Specifications
Pros
Cons
My Hands-On Notes
The window size is the first thing shooters notice. It dramatically reduces the tendency to lose the dot during transitions. Lens clarity is outstanding with very little tint.
Parallax shift remains well controlled, and the top battery compartment simplifies maintenance. The larger window does make the optic more vulnerable to impact compared with an RMR.
What People Say Online
Competition shooters routinely rank the SRO among the fastest pistol optics available thanks to its expansive field of view.
Mounting Clarity
Because it shares the RMR footprint, any RMR-cut Glock 19 Gen 2 slide will accept the SRO.
HOLOSUN EPS Carry
The EPS Carry delivers enclosed-emitter protection in a compact package. Although originally intended for slimmer pistols, it works extremely well on a Glock 19 Gen 2.
Specifications
Pros
Cons
My Hands-On Notes
The optic sits relatively low and balances well on compact handguns. The enclosed emitter eliminates debris-related failures. Controls are responsive, and the side-loading battery system is extremely convenient.
Parallax performance is strong, and co-witness capability is easier to achieve because of the lower deck height compared with many enclosed competitors.
What People Say Online
Carry-focused shooters frequently praise the EPS Carry for combining environmental protection with everyday concealment.
Mounting Clarity
A Glock 19 Gen 2 generally requires a K-footprint-compatible slide cut or adapter solution.
EOTECH EFLX
The EFLX brings EOTECH's reputation into the pistol-optic category with a large window and user-friendly controls.
Specifications
Pros
Want to print your doc?
This is not the way.
This is not the way.
Try clicking the ··· in the right corner or using a keyboard shortcut (
CtrlP
) instead.