Looking to mount a red dot sight on your pistol or rifle but not sure which one fits? You’re not alone. With more optics and mounting patterns on the market than ever before, figuring out what works with what can feel like trying to solve a puzzle with missing pieces.

That’s exactly why we built this guide.

Whether you’re upgrading a handgun with a micro red dot or dialing in your rifle setup with a compact reflex sight, it all starts with knowing the footprint—the mounting pattern that your optic uses to attach to the slide, mount, or plate. Choose wrong, and you’ll end up with something that doesn’t fit, doesn’t hold zero, or just doesn’t work at all.

This page breaks down the most common red dot and micro red dot footprints used across the firearm industry in 2025. We’ve grouped compatible optics together under their respective footprint to help you quickly identify what fits your firearm or mounting system.

So whether you’re running an MOS-cut Glock, a direct milled slide, or swapping mounts on a rifle, this reference makes it easy to match optics to platforms without guesswork.

If you’re unsure about a specific optic or footprint, feel free to reach out—we’re always happy to help you get it right the first time. Just keep in mind, this list isn’t all-inclusive. New optics hit the market constantly, and manufacturers occasionally revise mounting patterns or introduce entirely new footprints. We’ll do our best to keep this guide updated, but when in doubt, ALWAYS double-check with the manufacture.

Micro Red Dots (Pistol Optics)

Aimpoint Acro Footprint

Aimpoint Acro P1/P2

Steiner MPS

C-More Footprint

C-more RTS

C-more RTS 2

C-more STS

C-more STS 2

SIG Romeo 3

SIG Romeo 3 MAX

SIG Romeo 3 XL

Vortex Razor

Docter/Noblex Footprint

Burris Fastfire II

Burris Fastfire III

Burris Fastfire IV

Crimson Trace CTS 1250

Crimson Trace CTS 1300

Crimson Trace RAD

Crimson Trace RAD Pro

EOTech MRDS

Hawke Sport Optics – Reflex 1x25

Hex Dragonfly

Insight

Leapers UTG – OP3 Micro

Meopta

Primary Arms SLx RS-10

Vortex Venom

Vortex Viper

Holosun 507K

Holosun 507Kx2

Holosun 509T Footprint

Holosun 509T

Holosun HE509-RD

Holosun SCRS (Rifle Red Dot)

Leupold Delta Point Pro Footprint

Hawke Frontier Reflex 30mm #12163

Holosun SCS 320

Leupold Delta Point Pro

SIG Romeo-X Pro

Vortex Defender

Shield RMSc Footprint

Crimson Trace

CT RAD Micro

CT RAD Micro Pro

EOTech EFLX

JP Enterprises JPoint

Leupold Delta Point Pro

Primary Arms Classic Series 21mm Micro Reflex Sight

Shield PMSx

Shield RMS

Shield RMS 2

Shield RMSw

Shield RMSc

Shield SMS

Shield SMS 2.0

SIG Romeo 1 Pro

SIG Romeo 2

SIG Romeo RS Pro

SIG Romeo Zero

SIG Romeo Zero Elite

SIG Romeo Zero Pro

SIG Romeo Zero-R

SIG Romeo-X Compact

SIG Romeo-X Enclosed Compact

Swampfox Sentinel II

Vortex Defender CCW

SIG Sauer SIG-LOC MHS Footprint

SIG Romeo-M17

Trijicon RMR Footprint

AmeriGlo Haven

Holosun 407C

Holosun 507 Comp

Holosun 507C

Holosun 508T

Primary Arms Classic Series Mini Reflex Sight

Riton X3 Tactic PRD

Swampfox Justice

Swampfox Kingslayer

Swampfox Liberty

Trijicon RCR

Trijicon RMR

Trijicon SRO

Trijicon RMRcc Footprint

Trijicon RMRcc

⸻

Red Dots (Rifle Optics)

Aimpoint Micro Footprint

Aimpoint CompM5

Aimpoint CompM5b

Aimpoint Duty RDS

Aimpoint Micro H-1

Aimpoint Micro H-2

Aimpoint Micro T-1

Aimpoint Micro T-2

Bushnell TRS25

Holosun HS403B

Holosun HS403C

Holosun HS403GL

Holosun HS403R

Holosun HS503BU

Holosun HS503C

Holosun HS503CU

Holosun HS503FL

Holosun HS503G

Holosun HS503GU

Holosun HS503R

Holosun HS515C

Holosun HS515CM

Holosun HS515CT

Holosun HS515GM

Holosun HS515GT

Holosun HS530C

Holosun HS530G

Primary Arms SLx Advanced Rotary Knob

Primary Arms SLx MD-20

SIG Romeo 4

SIG Romeo 5

SIG Romeo-MSR

Swampfox Liberator

Vortex Crossfire

Vortex Sparc AR

Vortex Sparc Solar

Holosun 509T Footprint (Rifle Use)

Holosun SCRS

Holosun AEMS Footprint

Holosun AEMS

Holosun AEMS Core

Holosun AEMS Core X2

Holosun AEMS PRO X2

Holosun AEMS MAX Footprint

Holosun AEMS MAX

Trijicon MRO Footprint

Burris RT-1X

Trijicon MRO

Affiliate Portal - Click Here

Recover password

Red Dot & Micro Red Dot Footprints Fitment Guide – 2025