Best Glock 19 Red Dot (Black Friday 2026): What Fits Gen5/Gen6
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If you're shopping Black Friday or Cyber Monday sales for a red dot to put on a Glock 19, the single most important question isn't "which dot has the best reviews" — it's "which dot actually fits the slide cut on my pistol." Glock 19 owners are currently split across two very different mounting systems: the Gen5 MOS pattern that's been around for years, and the new Gen6 cut that launched in the U.S. in January 2026. Get the footprint right first, then worry about features and price. This guide walks through both, with a fit chart, specific picks, and a short FAQ.
Start here: which Glock 19 do you have?
Glock's Gen4 and Gen5 MOS (Modular Optic System) pistols ship from the factory with one adapter plate installed, and according to Glock, that plate fits Trijicon, Ameriglo, and most Holosun footprints — with the notable exception of the Holosun 509. If your optic isn't covered by the included plate, additional plates are sold separately through the GLOCK Store. This is the system most Glock 19 MOS owners have been living with for years, and it means the optic doesn't sit directly on the slide — it sits on a plate that sits on the slide.
Gen6 standard-frame pistols change that. Per Glock, Gen6 pistols "come optic-ready with three optic plates" in the box: the 02 plate covers the Trijicon RMR/RCR/RMR HD family and the Holosun 508T/407C/507C; the 03 plate covers C-More; and the 04 plate covers the Vortex Defender-ST/XL, EOTech EFLX, and Leupold DPP footprints. American Rifleman reports that the Gen6 optic cut is deeper than the MOS cut, so the plates sit flush and the optic effectively screws down close to the slide rather than riding high on a spacer. Gen6 launched in the U.S. in January 2026, so if you bought your Glock 19 this year, check your slide markings and the paperwork that came in the box to confirm which generation and plate set you have before you order anything.
For full details straight from the manufacturer, see Glock's optic mounting page.
Footprint fit chart
| Optic | Footprint | Fits G19 Gen6 plate? | Fits Gen5 MOS? | Dot/Reticle | Battery & life | Weight | MSRP | Price checked Nov 1, 2026 |
|---|---|---|---|---|---|---|---|---|
| Holosun HS507C X2 | RMR | Yes (02 plate) | Yes (common MOS plate) | 2 MOA dot / 32 MOA circle / both | CR1632 side tray, ~50,000 hrs | ~1 oz class | $364.69 | $232.99 at Primary Arms |
| Holosun HS507C X3 (2026) | RMR | Yes (02 plate) | Yes (common MOS plate) | Dot/circle-dot (per Holosun) | CR1632 side tray, up to ~100,000 hrs | 1.55 oz | $352.93 | Street price not yet verified |
| Holosun HS407C X2 | RMR | Yes (02 plate) | Yes (common MOS plate) | 2 MOA dot only | CR1632 side tray, ~50,000 hrs | ~1 oz class | $288.22 | $185.99 at Primary Arms |
| Trijicon RMR Type 2 (RM06) | RMR | Yes (02 plate) | Yes (common MOS plate) | 3.25 MOA (1 and 6.5 also offered) | CR2032, "over 4 years" at setting 4/8 per Trijicon | 1.2 oz | From $779 | $589.99 at Primary Arms |
| Trijicon SRO (SRO2) | RMR-compatible footprint, needs MOS kit | Not listed by Glock for Gen6 plates | Yes, with Trijicon SRO mounting kit AC32085 | 2.5 MOA | CR2032, "over 3 years" at 4/8 per Trijicon | 1.6 oz | $822 | $549.99 at Primary Arms |
| Vortex Defender-ST | DPP | Yes (04 plate) | Yes, via Leupold-pattern MOS plate | 3 or 6 MOA | CR2032 top-load, ~25,000 hrs | 1.48 oz | Not verified | Not verified |
| Aimpoint Acro P-2 | Acro interface | Not listed by Glock — check third-party plate compatibility | Not listed by Glock — check third-party plate compatibility | 3.5 MOA (2.5 and 9 also offered) | CR2032, ~50,000 hrs at setting 6 | 2.2 oz | — | $669 at Aimpoint US |
| K-footprint optics (507K X2, EPS Carry) / Shield RMS (Defender-CCW) | K / RMS (slimline) | No G19 plate listed by Glock | No G19 plate listed by Glock | Varies | Varies | Varies | Varies | Not applicable to G19 |
The picks
Best overall value: Holosun HS507C X2
The RMR footprint means it drops onto the Gen6 02 plate or a common Gen5 MOS plate without any guesswork, and the dot/circle-dot/both reticle options give you flexibility most first-time buyers appreciate. Side-loading CR1632 battery tray, rated around 50,000 hours, plus solar backup and Shake Awake motion sensing. Holosun lists it at $364.69; Primary Arms had it at $232.99 as of Nov 1, 2026.
Best budget: Holosun HS407C X2
Same RMR footprint and the same battery setup as the 507C X2, but it skips the circle reticle for a single 2 MOA dot — which is exactly what some shooters want for a cleaner sight picture. Holosun lists it at $288.22; Primary Arms had it at $185.99 on Nov 1, 2026, roughly $47 less than the 507C X2 at the same retailer that day.
Best duty-grade: Trijicon RMR Type 2 (RM06)
The RMR is a long-serving footprint in both military and law enforcement circles, and the Type 2 is built to that standard. Trijicon's battery life claim is "over 4 years" of continuous runtime at setting 4 of 8 on a single CR2032. It fits the Gen6 02 plate and common Gen5 MOS plates. MSRP starts at $779 per Trijicon's family page; Primary Arms had the 3.25 MOA version at $589.99 on Nov 1, 2026.
Best enclosed emitter: Aimpoint Acro P-2
If you want a fully enclosed housing — no exposed lens faces that can fog, smudge, or get blocked by debris — the Acro P-2 is the name most shooters reach for. It's worth noting, though, that Glock does not list an Acro-pattern plate for either Gen5 MOS or Gen6 on its optic mounting page, so you'll need to confirm compatibility with a third-party plate maker before buying, and follow that maker's fitment and torque instructions. Aimpoint lists the Acro P-2 at $669 through Aimpoint US.
Best for small slides (and why K-footprint optics don't directly fit)
Shooters coming from a Glock 43X or similar slimline pistol sometimes ask about K-footprint optics like the Holosun 507K X2 or EPS Carry, or the Shield RMS pattern used by the Vortex Defender-CCW. These are sized and shaped for micro-compact slides, and Glock does not list a Gen5 MOS or Gen6 plate for the Glock 19 that accepts those footprints. For a standard Glock 19, stick to RMR, DPP, or the plate-specific options Glock actually publishes — trying to force a small-footprint optic onto a G19 mounting system isn't a supported fit.
Features that matter
Footprint comes first, always — it determines whether the optic will sit flush on your plate or slide cut at all. Side-load vs. top-load battery matters for day-to-day use: a side-loading tray (common on Holosun models) usually lets you swap batteries without removing the optic from the slide, which helps preserve zero. Shake Awake is a motion sensor that wakes the dot when the pistol moves and lets it sleep when it's still, extending battery life without you having to remember to turn it off. Solar backup, offered on some Holosun models, supplements battery power under ambient light. Open vs. enclosed emitter is a durability and reliability trade-off — enclosed housings protect the lens from debris and moisture but add bulk and weight. Dot vs. circle-dot reticles are a matter of preference: a single small dot (like the 407C's 2 MOA dot) gives a cleaner precision aiming point, while a circle-dot (like the 507C's 2 MOA dot plus 32 MOA circle) can speed up target acquisition at close range. For more on reticle size trade-offs, see our guide on 3 MOA vs. 6 MOA red dots.
Where to find the current deal
Holiday pricing on red dots moves fast and varies by retailer, and we're not going to guess at Black Friday-specific numbers here since this guide was written ahead of the sale. For current, verified pricing on the optics covered above, check our daily deals page, which we update as prices change.
FAQ
What footprint is a Glock 19 MOS?
Gen4 and Gen5 MOS pistols ship with one adapter plate installed that, per Glock, fits Trijicon, Ameriglo, and most Holosun optics (the Holosun 509 is an exception). Other footprints require a different plate purchased separately through the GLOCK Store.
Will an RMR-footprint dot fit a Glock 19 Gen6?
Yes. Glock's Gen6 standard-frame pistols ship with three plates, and the 02 plate is built for the Trijicon RMR/RCR/RMR HD family as well as the Holosun 508T, 407C, and 507C.
507C or 407C?
The main difference is the reticle: the 507C X2 offers a dot, a circle, or both together, while the 407C X2 offers only the 2 MOA dot. On Nov 1, 2026, Primary Arms had the 407C X2 priced about $47 less than the 507C X2.
Open or enclosed emitter for carry?
Open-emitter optics like the RMR, SRO, and Holosun 507C/407C are lighter and lower-profile, which many carriers prefer. Enclosed-emitter optics like the Aimpoint Acro P-2 add a protective housing around the lens, at the cost of some extra size and weight. Either style can work for daily carry; the right choice depends on your priorities and your holster.
Before mounting any optic, confirm the firearm is unloaded and the magazine is removed, and always follow the plate and optic manufacturer's fitment instructions and torque specs — if you're not comfortable doing the install yourself, a qualified gunsmith can handle it. Don't attempt to mill a slide or otherwise modify the firearm to fit an optic that isn't designed for your mounting system. And once the work is done, store the pistol safely and unloaded when it's not in use. For help zeroing your new optic once it's mounted, see our guide on how to zero a red dot in five steps.