Glock's Gen 6 Optic Ready System uses a new plate set that does not interchange with Gen5 MOS. Here are the best factory and aftermarket Gen 6 plates ranked by footprint.
If you run a red dot on a Glock Gen 6, plan on replacing the factory optic plate. The Gen 6 Optic Ready System ships with a polymer plate held to loose tolerances that never seats the optic flush against the slide, so recoil drives into the optic mounting screws instead of bearing on the plate body, and the screws back out and walk your zero. The fix is a machined metal plate. For the common RMR / Holosun 507C footprint, the C&H Precision Gen6 RMR plate ($85.99) and the Calculated Kinetics Gen6 DOGTAG ($63.99) are the aluminum upgrades; dedicated C&H and GlockStore plates cover the Holosun 509T, EPS, Aimpoint ACRO, DeltaPoint Pro, and compact K/RMSc footprints. The ORS is a brand-new slide cut, so none of your old Gen5 MOS plates will fit it. We ranked the seven aftermarket Gen6 plates by footprint, material, and price, and mapped every footprint, factory or aftermarket, in the table below.
Aftermarket Gen 6 Optic Ready System plates ranked by footprint, material, and price. The factory polymer Plate 02 ships free in the box; these machined aluminum and steel plates add rigidity and cover the footprints the factory set leaves out.
Best aftermarket upgrade for the RMR footprint
Best value aluminum upgrade
Best for the Holosun 509T footprint
Best for the Holosun EPS family
Best for DeltaPoint Pro / EFLX / Vortex Defender optics
Best for Aimpoint ACRO / Steiner MPS optics
Best for compact K / RMSc footprint optics
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The single best reason to buy a metal Gen 6 plate is to get the recoil load off the optic screws. The Gen 6 ORS slide is machined with recessed footprint cuts, and the optic screws into threaded holes in the slide while a thin polymer interface plate drops in as a spacer. That direct-mount design sits lower than the old Gen5 MOS stack, which is good for height-over-bore and co-witness. The problem is the polymer plate: it is held to loose tolerances and does not seat the optic flush, so it leaves gaps at the slide cut and the optic mounting screws end up carrying recoil they were never meant to take.
The result is screws that back out over a few range trips. The zero walks even when the witness marks still look aligned and the screws looked tight last time you checked, and re-torquing them only resets the clock. A machined aluminum or steel plate seats flush, carries the recoil across the full plate body instead of the fasteners, and ends the problem. That is the whole argument for the aftermarket plates below: same footprint, a mount that actually holds.
If you have not bought the optic yet, decide on the footprint first and the plate second. Our best pistol red dot guide ranks the dots themselves, and the best enclosed-emitter pistol red dots guide covers the EPS, 509T, and ACRO optics that pair with the aftermarket plates in this ranking.
Each Gen 6 plate is cut for one optic footprint. Find your optic, then buy the plate that matches it. The factory column tells you whether the plate already came in your box or whether you need to buy an aftermarket plate at all.
| Footprint | Optics It Mounts | In Factory Set? | Best Plate |
|---|---|---|---|
| RMR / 507C | Trijicon RMR/RCR/SRO, Holosun 407C/507C/507Comp/508T | Yes (Plate 02) | C&H Gen6 RMR or CK DOGTAG |
| C-More | C-More RTS / STS-pattern optics | Yes (Plate 03) | Factory Plate 03 |
| DeltaPoint Pro | Leupold DPP, EOTech EFLX, Vortex Defender ST/XL | Yes (Plate 04) | C&H Gen6 DPP / EFLX |
| Holosun 509T | Holosun 509T | No | C&H Gen6 509T steel |
| Holosun EPS | Holosun EPS, EPS Carry, SCS Carry | No | C&H Gen6 EPS |
| ACRO | Aimpoint ACRO P-2, Steiner MPS, Viridian RFX44/45 | No | GlockStore GS ACRO/A |
| K / RMSc | Holosun 507K, Shield RMSc, Vortex Defender CCW | No | GlockStore GS K |
Two footprint traps catch Gen 6 buyers out. The Aimpoint ACROfootprint is not the same as Aimpoint's newer COA / A-Cut, which is a separate proprietary cut Glock co-developed; the GlockStore ACRO plate does not fit COA optics. And the compact K and RMSc footprints share screw holes but differ in lug geometry, so confirm your specific micro optic against the plate's listed set rather than assuming any small dot drops on. For the broader footprint picture across all pistols, our best Holosun optics guide breaks down the 507C, 509T, and EPS families, and you can sort optics by footprint and price in the full optics catalog.
Material is the second decision after footprint. The factory plate is polymer, the lightest and least rigid option. Aluminum is the mainstream aftermarket choice: the C&H Precision plates use 6061 aluminum with a Type III hard-anodized finish, while the Calculated Kinetics DOGTAG steps up to 7075, the strongest alloy in this class. Steel, used on the C&H Gen6 509T plate, is the most rigid material available and the right call for an enclosed-emitter duty optic, at the cost of a little more weight.
On price, the factory plate is free, the GlockStore plates run $59.99, the Calculated Kinetics DOGTAG is $63.99, the C&H 509T steel plate is $75.99, and the remaining C&H aluminum plates are $85.99. The Calculated Kinetics plate is the standout value because it pairs the stronger 7075 alloy with a full hardware kit: optic and slide screws, a Torx bit, and Vibratite thread locker in the box, plus published co-witness sight-height guidance. For most RMR-footprint shooters who want to leave the polymer plate behind, it is the plate to buy.
Sling, light, backup sights, and QD mounts, the upgrades most builders add first.
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The plate is one piece of the optic install. Once the dot is mounted, our Glock 19 upgrades guide covers suppressor-height sights for co-witness, triggers, lights, and the rest of the upgrade path that carries over to the Gen 6. For the full breakdown of what changed between generations, including the ORS optic system, read the Glock Gen 5 vs Gen 6 comparison. And to plan a complete carry setup with optic, light, and holster, use the pistol builder tool.
Avid shooter with 10+ years of experience including competition shooting, and an associate member of the Professional Outdoor Media Association (POMA). Built 10+ AR-pattern rifles and several handgun platforms for home defense, competition, and suppressed night shooting.
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