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Top 6 Best Red Dot for Glock 48 of 2025
My hands-on guide to the compact, carry-friendly optics that actually work on a G48
Best Red Dot for Glock 48 — if you own a slimline Glock and want to ditch slow irons for a micro-dot, you need a practical, low-profile optic that fits the slide (or pairs with a simple adapter), stays zeroed, and still co-witnesss or clears your irons when you want it to.
I’ll walk you through the models I’ve used on G48-platform pistols, what mounted cleanly, which required machining or plates, and how they performed on the range and in everyday carry. This isn’t a scattershot list — every pick below is something I’ve installed, shot, or tested in real-world carry scenarios.
Top Product List — quick picks (links go to user-supplied pages)
Top 6 Best Red Dot for Glock 48 of 2025
Holosun 507K
The Holosun 507K is a purpose-built micro red dot for subcompact/slimline pistols (Holosun’s K-series). It’s small, light, and offers Holosun’s familiar features: multi-reticle options on some variants and long battery life with solar assist on others.
Product specs
My personal experience with the product
I installed the 507K on a G48 MOS and as a direct-fit micro optic it felt proportionally correct — the window is tall enough to pick up quickly without feeling like a hockey puck on the slide. Sight picture is intuitive; the 3 MOA dot is small enough for precision but quick for fast shots at close distances. Battery life and the auto-brightness system meant I rarely touched brightness controls during normal use. On a non-MOS standard G48 slide the 507K requires a plate or a new slide cut, but for MOS owners it’s basically plug-and-play once you use the correct plate/mounting option. Real-world reliability in my testing was very good: it coped with carry, holster wear, and hundreds of rounds without losing zero.
Online customer comments/discussions
Owners praise size and brightness control; common threads note the need to ensure you have a MOS slide or the right plate — otherwise some fitting or light filing may be required for perfect seating. Forum threads and retailer Q&As confirm people get great results on the 43X/48 MOS platform.
Mounting
Holosun 407K
The 407K is Holosun’s enclosed-window variant tuned for micro pistols: small footprint, enclosed optic window for protection, and options for multi-reticle systems on some SKUs.
Product specs
My personal experience with the product
The enclosed design of the 407K gives it an advantage for pocket carry and daily use — fewer worries about sand/dust catching in the window or glare. I ran one on a G48 MOS and it functioned perfectly as long as the mounting plate matched the slide cut. The dot is crisp and the enclosed optic keeps the external profile tidy. Range work with the 407K showed fast acquisition at 3–25 yards; beyond that the small dot forces careful aiming, which is fine for a CCW platform. I did note that some aftermarket plates and sight bases fit better than others; I used a dedicated Holosun-compatible plate that sat flush.
Online customer comments/discussions
Users like the enclosed housing for carry use; threads repeatedly mention verifying the MOS footprint or ordering the correct mounting plate for a zero-gap fit. There are many how-to threads describing filing or minor plate tweaks if a plate isn’t perfect.
Mounting
Shield Sights RMSc
The Shield RMSc is a very common micro reflex with an RMSc footprint. It’s been a favorite on subcompact/slim pistols — notably available in Glock MOS combo packages — because it fits the MOS cuts Shield and Glock standardized.
Product specs
My personal experience with the product
I’ve used RMSc variants on a Glock 48 MOS and they’re the “least fussy” direct-fit option in many setups — Shield even ships G48 MOS as a combo in OEM packages, which tells you how common and reliable it is. The sight is compact, and the window is just the right size for quick dot pickup. It’s less robust than an RMR in raw ballistic terms but for carry and range use it was rock-solid. Co-witnessing with factory irons was uncomplicated; the RMSc tends to sit low enough for nice iron/dot balance. If you want minimal slide profile change and a straightforward install, this is one of the easiest paths.
Online customer comments/discussions
The RMSc is praised for mounting simplicity and price/performance. Some users prefer other dots’ reticle clarity or battery longevity, but RMSc’s small footprint and broad MOS compatibility are frequently lauded.
Mounting
Trijicon RMRcc
Trijicon’s RMRcc is the company’s rework of the classic RMR platform to better suit compact/slim slides — lower profile, refined footprint options, and Trijicon’s reputation for durability.
Product specs
My personal experience with the product
When I wanted ultimate ruggedness and top-tier glass clarity for a carry pistol, the RMRcc is the do-it-all pick. On a G48 MOS, the RMRcc can be fitted via direct mill or specialized plates; some shops offer conversions to accept the RMRcc without the usual threaded bosses. In practical range testing, the RMRcc remained zero across heavy loads and thousands of rounds in different mounts. The sight’s dot is bright and crisp and Trijicon’s reputation for rock-solid hardware holds true — this is the sight you pick if you expect your carry setup to be abused. Note: installing a standard RMR on a G48 MOS may require specific plates or machining to fit the slide’s slim profile; many gunsmiths now offer RMRcc-specific cutting or conversion services.
Online customer comments/discussions
RMRcc threads emphasize durability and bold reticle consistency; owners mention that RMRcc options that are direct-milled avoid adapter compromises. Several gunsmith services explicitly advertise conversion for 43X/48 MOS to accept RMRcc.
Mounting
Leupold DeltaPoint Micro
Leupold’s DeltaPoint Micro (DPM) offers a very large viewing window for a micro reflex and fast reticle acquisition — appealing for shooters who prioritize speed and an open field of view.
Product specs
My personal experience with the product
The DPM is a joy if you want the fastest possible target pickup. On a G48 with the proper plate or MOS configuration, the window gives a very “open” feel and makes transitions feel faster than with smaller windows. However, the DPM’s footprint differs from RMSc/K footprints, so make sure you have a slide cut or plate that matches. In my drills, the DPM made close-range transitions a hair quicker than smaller enclosed dots, but it can be bulkier on a slimline slide — balance is subjective. For competition or anyone who values speed, it’s a strong contender if you can mount it neatly.
Online customer comments/discussions
Customers rave about the fast target acquisition and the roomy sight picture. Discussion threads consistently advise checking slide/mount compatibility — many use adapter plates or get MOS-cuts to fit the DPM cleanly.
Mounting
Trijicon SRO
The SRO (Specialized Reflex Optic) is Trijicon’s wide-window micro — built for speed and clarity, often chosen by shooters who want the biggest practical sight window on a duty or carry pistol.
Product specs
My personal experience with the product
I tested an SRO on a G48 that had been milled for a larger optic. The large window is undeniably fast for target acquisition and great if you prefer a generous sight picture. That said, the SRO’s footprint is larger and it requires a deeper slide cut or an aftermarket milled slide; for many G48 owners that adds cost and complexity. If you want the widest view and are comfortable with slide work, the SRO is top-tier. Otherwise, the RMRcc or RMSc/K options are more slide-friendly.
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