The Holosun K footprint

The Holosun K is a pistol optic footprint that mounts with 2 screws (screw_through). 5 red dot optics use the Holosun K footprint, including the Holosun EPS-CARRY, Holosun 407K-X2 and Holosun 507K-X2. It also mounts on 1 more pistol through a factory plate.

Modified RMSc pattern. Identical screw spacing and front lug positions to RMSc, but the rear recoil lugs are removed - only two front lugs with shallower recesses. The modification enables the waterproof rating on K-series optics. Used by Holosun 407K, 507K, EPS, and EPS Carry. K-cut slides cannot directly accept RMSc optics; RMSc-cut slides require an adapter to mount K-series optics (or modification - filing down the rear lugs).

Family: Holosun K Screw count: 2 Mounting: screw_through Optics: 5 Pistols: 26 direct · 1 via plate

Footprint specifications are compiled from manufacturer drawings and optic spec sheets.

Optics with the Holosun K footprint · 5

Pistols cut for the Holosun K directly · 26

Mount it with a plate

Springfield XD OSP · 1 pistol

Via the OEM/Aftermarket Springfield XD OSP optic plate (Holosun K) plate. store.springfield-armory.com

Show the 1 pistol
All 1 pistol with the Springfield XD OSP plate system

Frequently asked

What optics use the Holosun K footprint?

5 optics use the Holosun K footprint, including the Holosun EPS-CARRY, Holosun 407K-X2, Holosun 507K-X2 and Holosun RONIN-EPS-CARRY-RD-MRS.

How is the Holosun K footprint mounted?

The Holosun K footprint uses 2 screws and a screw through mounting style. It also incorporates 2 recoil lugs to resist rearward movement under firing.

Is the Holosun K footprint part of a larger family?

The Holosun K is its own independent footprint standard. Optics using this footprint are not cross-compatible with other footprint families unless an adapter plate is used.

Which pistols take the Holosun K with a plate?

1 pistol reach the Holosun K through a factory plate, using the Springfield XD OSP plate system.