6 Best Red Dot for Glock 22 in 2026: Mounting & Compatibility
The Glock 22 is a hard-working .40 S&W pistol, and in my experience, it rewards a red dot that can handle sharper recoil, fast slide cycling, and daily carry abuse. I look for a sight that stays zeroed, gives me a clean aiming reference, and does not turn mounting into a guessing game.
For a Glock 22, compatibility matters as much as glass quality. A Glock 22 MOS can use optic plates, while a non-MOS Glock 22 usually needs a slide cut or a dovetail adapter. My strongest advice is simple: choose the optic first, then match the slide cut or plate to that footprint.
Quick Summary
My top overall choice is the Trijicon RMR Type 2 because it is rugged, proven, and well suited to the recoil impulse of a .40-caliber Glock. The HOLOSUN 507C-X2 is my favorite value pick because it gives multiple reticles and strong features for the money. For shooters who want a closed-emitter setup, the Aimpoint ACRO P-2 and Steiner MPS stand out. The Leupold Deltapoint Pro is excellent for a large, easy-to-find window, while the HOLOSUN 508T is a tough titanium option for serious range and defensive use.
Top Product List
Trijicon RMR Type 2 — Best for overall Glock 22 durability
HOLOSUN 507C-X2 — Best for value and reticle options
HOLOSUN 508T — Best for titanium housing strength
Aimpoint ACRO P-2 — Best closed-emitter duty optic
Steiner MPS — Best enclosed optic for compact height
Leupold Deltapoint Pro — Best for a large viewing window
6 Best Red Dot for Glock 22 in 2026: Mounting & Compatibility
Trijicon RMR Type 2
The Trijicon RMR Type 2 is the red dot I trust most when durability comes first. On a Glock 22, that matters because .40 S&W has a snappier recoil impulse than 9mm, and the optic needs to survive repeated slide movement without losing zero.
Footprint: Trijicon RMR
Style: Open-emitter reflex sight
Best use: Duty, carry, defensive training
Housing: Rugged forged-style body
Reticle: Red dot, model dependent
Battery access: Bottom-load battery
Pros
Extremely durable
Excellent aftermarket plate support
Proven on pistol slides
Strong choice for defensive use
Cons
Battery changes require optic removal
Window is not as large as some newer optics
Usually costs more than budget options
My personal experience with the RMR Type 2 has been boring in the best way. I mount it, zero it, confirm it after a few range sessions, and it just keeps working. The dot is easy to track during recoil, and the housing feels built for hard use rather than casual plinking.
Online customer feedback usually centers on reliability, ruggedness, and long-term confidence. The most common complaints I see are the price and the bottom battery design, but most serious shooters still respect it because it has such a strong track record.
For mounting, the RMR Type 2 does not mount directly to a standard non-MOS Glock 22 slide. It requires either an RMR slide cut, a dovetail adapter, or the correct Glock MOS adapter plate if you have a Glock 22 MOS. For the cleanest setup, I prefer a dedicated RMR slide cut.
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HOLOSUN 507C-X2
The HOLOSUN 507C-X2 is my favorite feature-packed pick for a Glock 22. I like it because it gives me a lot of practical capability without feeling overcomplicated.
Footprint: Trijicon RMR-style
Style: Open-emitter reflex sight
Best use: Range, carry, home defense
Reticle: Multi-reticle system
Battery access: Side tray
Solar backup: Yes, model dependent
Pros
Excellent value
Multiple reticle choices
Side battery access
Easy to find compatible Glock plates
Cons
Open emitter can collect lint or debris
Not as duty-proven as the RMR
Buttons may feel small with gloves
On my Glock-style pistols, I like the 507C-X2 because the circle-dot reticle helps me pick up the sight quickly from the draw. With the Glock 22, that quick reticle acquisition can help manage the snappier recoil and get back on target faster.
Customer feedback is generally very positive for battery life, reticle flexibility, and price-to-performance. Many buyers like that it feels premium without jumping into top-tier pricing. The complaints usually involve preference issues, like whether the circle-dot is too busy.
For mounting, the 507C-X2 usually works with RMR-pattern cuts and plates. It does not mount directly to a standard Glock 22 slide unless the slide has been cut for that footprint. On a Glock 22 MOS, use the correct RMR-compatible MOS plate or an aftermarket plate.
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HOLOSUN 508T
The HOLOSUN 508T is the optic I would choose when I want Holosun features in a stronger housing. It keeps the practical reticle system but adds a tougher feel that fits the Glock 22 well.
Footprint: Trijicon RMR-style
Style: Open-emitter reflex sight
Best use: Defensive carry and heavy range use
Housing: Titanium-style construction
Reticle: Multi-reticle system
Battery access: Side tray
Pros
Tougher housing than many value optics
Great reticle flexibility
Good battery access
Strong match for .40 S&W recoil
Cons
More expensive than the 507C-X2
Open emitter design
Window shape may not suit everyone
My experience with the 508T is that it feels more serious than a basic range optic. I like it on pistols that get knocked around in classes, bags, and holsters. On a Glock 22, I especially appreciate the combination of durability and fast reticle pickup.
Online feedback often praises the rugged body, useful reticle choices, and dependable zero retention. Most complaints come from buyers comparing it against cheaper Holosun models and wondering whether the upgraded housing is worth the added cost.
For mounting, the 508T uses an RMR-style footprint. It will not directly mount to a plain Glock 22 slide. You need an RMR cut, a compatible MOS plate, or another quality adapter system. I would avoid cheap dovetail mounts for this optic unless it is only for casual range use.
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Aimpoint ACRO P-2
The Aimpoint ACRO P-2 is my pick for shooters who want a closed-emitter red dot on the Glock 22. A closed emitter helps protect the LED system from rain, dust, lint, and debris.
Footprint: ACRO-style
Style: Closed-emitter reflex sight
Best use: Duty, harsh weather, defensive carry
Reticle: Red dot
Battery access: Side battery
Housing: Enclosed body
Pros
Excellent enclosed design
Very rugged
Strong for duty-style use
Great protection from debris
Cons
Bulkier than open-emitter optics
Requires specific ACRO mounting plate or cut
Premium price
I like the ACRO P-2 most when reliability in poor conditions is the priority. It is not the smallest optic, but on a Glock 22 carried for serious use, I can live with the extra bulk because the enclosed design gives me peace of mind.
Customer feedback is usually strong around reliability, battery life, and build quality. The common downside mentioned is size, especially for concealed carry. Some shooters also dislike needing ACRO-specific plates instead of the more common RMR footprint.
For mounting, the ACRO P-2 does not mount directly to a standard Glock 22 or standard RMR cut. It requires an ACRO-specific slide cut, ACRO adapter plate, or a Glock MOS-to-ACRO plate if using a Glock 22 MOS.
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Steiner MPS
The Steiner MPS is another enclosed-emitter option that I like for a Glock 22 when I want protection from the elements but prefer a compact, squared-off optic body.
Footprint: ACRO-compatible style
Style: Closed-emitter reflex sight
Best use: Carry, duty, bad-weather use
Reticle: Red dot
Battery access: Side access
Design: Compact enclosed optic
Pros
Enclosed emitter
Compact for its class
Clear sight picture
Good defensive-use profile
Cons
Requires the right plate or cut
Not as universally supported as RMR optics
Still bulkier than small open dots
My personal experience with the MPS is that it feels dense, compact, and purpose-built. I like how the enclosed design reduces worry about lint or rain blocking the emitter. For a Glock 22 that may ride in a duty holster or range bag, that is a real advantage.
Customer feedback often highlights the rugged enclosed housing, compact size, and crisp aiming point. Some shooters mention that mounting compatibility takes more planning than with RMR-footprint optics.
For mounting, the Steiner MPS generally requires an ACRO-style mounting solution. It does not mount directly to a standard Glock 22 slide. On a Glock 22 MOS, use a compatible MOS-to-MPS or MOS-to-ACRO-style plate.
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Leupold Deltapoint Pro
The Leupold Deltapoint Pro is my favorite Glock 22 option for shooters who want a big, forgiving window. It makes the dot easy to find, especially during fast presentations.
Footprint: DeltaPoint Pro
Style: Open-emitter reflex sight
Best use: Competition, range, fast shooting
Window: Large viewing window
Battery access: Top-load battery
Reticle: Red dot, model dependent
Pros
Large sight window
Easy dot acquisition
Top battery access
Excellent range optic
Cons
Taller than some competitors
Requires DPP-specific plate or cut
Less compact for concealed carry
I enjoy shooting the Deltapoint Pro because the window feels generous. When I am working quick transitions or recoil recovery with a Glock 22, the larger window makes the dot easier to reacquire.
Online customer feedback often praises the wide field of view and easy battery changes. The main criticisms are height, bulk, and the need for the correct mounting footprint.
For mounting, the Deltapoint Pro uses its own footprint. It does not mount directly to a standard Glock 22 slide unless the slide is cut for DPP. On a Glock 22 MOS, use the correct MOS adapter plate for the DeltaPoint Pro footprint.
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How to Choose the Right Red Dot Sight
For a Glock 22, I start with mounting. If you have a Glock 22 MOS, pick the optic footprint and buy a quality plate that matches it. If you have a standard Glock 22, the cleanest option is a milled slide cut for your chosen optic. Dovetail adapters work, but I treat them as a backup or testing solution rather than my preferred defensive setup.
Next, consider recoil durability. The Glock 22’s .40 S&W recoil is not unmanageable, but it is sharper than most 9mm setups. I prefer rugged optics like the Trijicon RMR Type 2, HOLOSUN 508T, Aimpoint ACRO P-2, and Steiner MPS for harder use.
Window size also matters. A larger window like the Deltapoint Pro can feel faster, while a smaller rugged optic like the RMR can carry better. For concealed carry, I care about snag resistance and holster compatibility. For range or competition, I care more about window size and dot visibility.
Finally, decide between open and enclosed emitters. Open emitters are lighter and common. Enclosed emitters are better when rain, lint, mud, or debris may block the emitter. For a defensive Glock 22, I increasingly like enclosed optics, but the RMR and 507C-style optics still make plenty of sense.
FAQs
What red dot footprint is best for a Glock 22?
I prefer the RMR footprint for most Glock 22 builds because it has broad slide-cut and plate support. If I want an enclosed emitter, I choose an ACRO-style setup instead.
Can I mount a red dot directly to a Glock 22?
Only if the slide is already cut for that optic footprint. A standard non-MOS Glock 22 needs milling, a dovetail adapter, or an aftermarket optic-ready slide.
Is the Glock 22 MOS better for red dots?
Yes, it is more convenient because it accepts adapter plates. However, I still prefer a direct-milled slide for the lowest and most secure setup.
Is an enclosed red dot worth it on a Glock 22?
For duty, carry, or outdoor use, yes. I like the Aimpoint ACRO P-2 and Steiner MPS when I want better protection from dirt, lint, rain, and debris.
What is the best overall red dot for the Glock 22?
My best overall pick is the Trijicon RMR Type 2. It is rugged, proven, and easy to support with plates, slide cuts, holsters, and aftermarket accessories.
Conclusion
For the Glock 22, my strongest overall recommendation is the Trijicon RMR Type 2 because it balances durability, compatibility, and real-world reliability better than anything else on this list. The HOLOSUN 507C-X2 is the value pick I would choose for features, while the HOLOSUN 508T is the tougher Holosun option. If I wanted an enclosed-emitter setup, I would choose the Aimpoint ACRO P-2 first and the Steiner MPS close behind. For a large, fast window, the Leupold Deltapoint Pro is still a very strong choice.