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The Holosun 509T footprint

Page last updated . Data compiled September 2026 by Andrew Terrebonne.

509T proprietary

Layout
Proprietary screw and lug pattern
Screws
per Holosun kit
Driver
T10
Torque
15 in-lb plate / 20 in-lb optic
Pattern
unique to the 509T
Schematic, not to scale: top-down, front of the optic up.

These are the usual figures for this footprint; no maker document is linked for them here yet. What would settle it.

What to knowProprietary. Almost always mounted on a dedicated 509T plate; steel plates are the usual recommendation.

What uses the Holosun 509T footprint?

1 optic uses it and 17 plates provide it. Torque 15 in-lb plate / 20 in-lb optic. Pattern: unique to the 509T. The lists below name each optic, pistol and plate.

Optics using this footprint

Plates that provide this footprint

Slide interfacePlateSource
GLOCK MOS — standard & full sizeV4 MIL/LEO (one SKU per footprint)C&H Precision
GLOCK MOS — 10 mm / .45 framesV4 MIL/LEO (large frame)C&H Precision
GLOCK Gen6 ORSGen 6 MIL/LEO → Holosun 509T (steel)C&H Precision ↗
S&W Equalizer optic cutEqualizer / M&P 5.7 → Holosun 509TC&H Precision ↗
Canik METE optic cut (RMSc plus RMRcc or RMR)METE 509T DOGTAGCalculated Kinetics ↗
S&W M&P C.O.R.E. / Optics ReadyM&P 2.0 → Holosun 509T (steel)C&H Precision ↗
SIG P320 optic cut (Romeo1Pro pattern)P320 → Holosun 509TC&H Precision ↗
Springfield AOSAOS → Holosun 509TC&H Precision ↗
Walther PDP 1.0 optic cutPDP 1.0 → Holosun 509TC&H Precision ↗
Walther PDP 2.0 optic cutPDP 2.0 → Holosun 509TC&H Precision ↗
CZ P-10 OR plate systemP-10 OR → Holosun 509THolosun ↗
CZ Shadow 2 OR plate systemShadow 2 OR → Holosun 509TImpact Machine ↗
Canik TTI Combat optic interface platesTTI 509T DOGTAGCalculated Kinetics ↗
Shadow Systems multi-optic cut (MR920, DR920, XR920)MR920 / XR920 → Holosun 509T (steel)C&H Precision ↗
Shadow Systems CR920 optic cut (RMSc pattern)CR920 → Holosun 509TC&H Precision ↗
HK VP9 / SFP9 OR plate systemHK Holosun 509T plate (51000792)HK factory ↗
Staccato / 2011 optic plate systemStaccato → Holosun 509TDawson Precision ↗

Check a pairing

The fit checker tells you whether a specific optic and pistol go together, and what it costs to mount.

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