Optic Footprint Guide

Understanding red dot optic mounting patterns for slide milling

What is an Optic Footprint?

An optic footprint refers to the mounting pattern on the bottom of your red dot sight. This pattern must match the cut we mill into your slide for proper installation. Choosing the correct footprint is critical for a secure, functional mount.

Common Footprint Types

RMR (Trijicon)

Screw Pattern: 0.740" / 18.8mm

The most common optic footprint. Compatible with Trijicon RMR, SRO, and many other manufacturers who use the RMR standard (Holosun 407/507 series, Swampfox, etc.).

RMRcc (Trijicon Compact)

Screw Pattern: 0.625" / 15.9mm

Compact version of the RMR footprint, designed for subcompact slides. Compatible with Trijicon RMRcc and similar compact optics.

RMSc (Shield)

Screw Pattern: 0.550" / 14mm

Shield RMSc footprint for slim slides. Compatible with Shield RMSc, Holosun K series, and other micro red dots using this pattern.

DPP (Delta Point Pro)

Screw Pattern: 0.550" / 14mm

Leupold Delta Point Pro footprint. Also compatible with some Sig Romeo optics.

ACRO (Aimpoint)

Slide Width: Minimum 0.850" / 22mm

Aimpoint ACRO footprint for enclosed emitter designs. Requires wider slides due to larger mounting area. Compatible with Aimpoint ACRO P-1, P-2, and Steiner MPS.

Custom / Other

Pattern: Custom and programmed to order

For optics that don't match standard footprints. Requires exact measurements and specifications.

How to Identify Your Optic's Footprint

  1. Check your optic's manufacturer specifications or manual
  2. Look for the model number and search "[Model] footprint compatibility"
  3. Measure the screw hole spacing on the bottom of your optic
  4. Contact the optic manufacturer if you're still unsure

Still Have Questions?

If you're unsure about which footprint to choose, please contact us before placing your order. We're here to help ensure you get the right cut for your optic.

Start Your OrderContact Us