Optic Plates That Match Your Slide Cut to Your Red Dot
An optic-ready pistol only accepts the footprints its slide was cut for. If your red dot uses a different pattern, an optic plate bridges the two. GRITR plates cover the combinations shooters actually run: Glock MOS slides to RMR and ACRO footprints, Walther PDP 2.0 to RMR, Springfield Hellcat and slimline Glock to the Holosun K pattern. Check your slide cut and your optic footprint, then pick the plate that connects them.
Plates are machined from aluminium and ship with the mounting hardware for the pairing they are made for. If you are starting from scratch instead of adapting an existing optic, the GRITR RD1 series covers both common footprints directly. Everything in this category is covered by the Unlimited GRIT Lifetime Warranty.
Find Your Slide and Optic Combination
Running a Walther PDP 2.0, start with the Walther PDP 2.0 optic plate. On a Glock MOS slide, the Glock MOS to RMR plate covers the most common setup, and the Hellcat to Holosun K plate handles the compact end. For enclosed emitters, use the Aimpoint ACRO plate for Glock MOS. Buying the optic too, the RD1MAX red dot sight uses a 6 MOA dot on the RMR footprint, while the RD1EC red dot sight runs 3 MOA on RMSc for compact slides.
Frequently Asked Questions
What is an optic plate and do I need one?
An optic plate is an adapter that sits between an optic-cut slide and a red dot whose mounting pattern does not match that cut. You need one when the two footprints differ, which is common on modular systems like Glock MOS where the slide ships cut for a generic pattern rather than a specific optic. If your red dot bolts directly into your slide cut with the supplied screws, you do not need a plate. If the screw holes do not line up, you do.
How do I identify my red dot footprint?
Look at the recoil lugs and screw spacing on the underside of the optic. RMR is the widest common pattern, used by Trijicon RMR and many clones. RMSc is the narrow pattern found on compact optics for slimline pistols. Holosun K covers the 407K and 507K. ACRO is the enclosed-emitter pattern with a distinct rectangular base. The manufacturer's spec sheet will name the footprint directly, and that name is what you match against the plate.
Will an optic plate change my sight height?
Yes, slightly. Any plate raises the optic by its own thickness, which is usually a few millimetres. That matters if you co-witness with iron sights, because standard-height irons may no longer line up through the window. Suppressor-height sights solve it. If you do not co-witness, the change is small enough that it only affects your initial zero, which you will be establishing anyway after mounting.
How do I mount an optic plate correctly?
Start with an unloaded firearm and confirm the chamber is clear. Remove the slide cover plate, clean the mounting surface, then seat the optic plate using the screws supplied for your specific pairing. Tighten in a cross pattern to the torque figure in the instructions rather than by feel, since over-tightening strips aluminium threads and under-tightening lets the optic shift under recoil. Apply thread locker if the instructions call for it, let it cure, then zero at the range. Browse the rest of our
firearm accessories for tools and bore sights.
