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Red Dot Mount Finder: which mount fits your optic?

Choose your red dot and your gun. We show the optic's mounting footprint, where that information comes from, and the Boss mounts that take it.

02 Your gun

Red dot footprint chart: which optics use each footprint

FootprintOptics that use it
Trijicon RMR Holosun 407C X2, Holosun 507C X2, Holosun 507COMP, Holosun 508T X2, Primary Arms SLx RS-10R, Swampfox Liberty / Liberty II, Trijicon RCR, Trijicon RMR Type 2, Trijicon SRO
Leupold DeltaPoint Pro EOTech EFLX, Holosun SCS-320, Leupold DeltaPoint Pro, Sig Sauer Romeo-X Pro, Sig Sauer Romeo3Max Pro, Vortex Defender-ST, Vortex Venom Enclosed
Shield RMS/RMSc Riton 3 Tactix MPRD, Shield RMS2, Shield RMSc, Shield SMSc, Sig Sauer RomeoZero, Vortex Defender-CCW
Docter/Noblex Burris FastFire 3, Burris FastFire 4, Primary Arms SLx RS-10, Vortex Venom, Vortex Viper
Holosun K Holosun 407K X2, Holosun 507K X2, Holosun EPS, Holosun EPS Carry, Holosun SCS-Carry
C-More C-More RTS2, C-More RTS3, C-More STS2, Sig Sauer Romeo3Max
Aimpoint ACRO Aimpoint ACRO P-2, Steiner MPS
Sig Romeo1Pro (PRO cut) Sig Sauer Romeo1Pro, Sig Sauer Romeo2
Holosun 509T Holosun 509T X2
Aimpoint A-CUT Aimpoint COA
Trijicon RMRcc Trijicon RMRcc
Model-specific Holosun SCS (MOS/MP2/P10/PDP/VP9), Leupold DeltaPoint Micro (discontinued), Swampfox Kraken / Kraken II
Picatinny rail Holosun 510C, Holosun 512C, Shield SIS / SIS2

Footprint data comes from optic makers' published specifications where available. Screw length, recoil bosses and deck height can differ within a footprint, so check your optic's manual before fitting.

Red dot mount questions

What is a red dot footprint?

The footprint is the pattern of screw holes and recoil lugs on the base of the optic. A mount, plate or slide cut must match it. Many competition optics share the Trijicon RMR pattern; others use the Leupold DeltaPoint Pro pattern or smaller carry patterns.

Two optics share a footprint. Will they both fit the same mount?

Usually, but not always. Housing shape, screw length and recoil lug height can differ between optics on the same footprint, so check the optic maker's manual and use screws of the right length.

Where does the footprint information come from?

From each optic maker's own product pages and manuals wherever possible. Each optic shows its source. If the source is a secondary chart, we flag it so you can confirm before you buy.

There is no Boss mount for my optic. What now?

Use the request form under the result. It goes straight to us, and mount requests decide what we design next.