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HK CC9 optic footprint: what red dots fit

HK CC9

The HK CC9 mounts red dots on a footprint HK spells out as RMSc / 407K, milled directly into the slide with no adapter plate in the stack. That single cut answers both micro patterns, so the Shield RMSc and the Holosun K family both bolt to the steel: the 407K and 507K, the enclosed EPS Carry and SCS Carry, the SIG Romeo Zero Elite and ROMEO-X Compact, the Vortex Defender-CCW, the Swampfox Sentinel II and the Gideon Judge II. The footprints that do not fit are the larger ones, the Trijicon RMR and the Holosun 507C, because the pocket is sized for micro optics rather than for a compact-slide dot.

HK splits the CC9 into two lines and the difference decides what you still need to buy. Optics Ready guns leave the factory with the cut and a tritium front sight against a blacked-out serrated rear, and no dot. Optics Equipped guns arrive with the optic already fitted, either a Holosun 407K or a Vortex Defender-CCW, and with blacked-out front and rear serrated sights instead. The slide cut is the same on both, so an Optics Ready pistol takes any of the micro dots on this page, while an Optics Equipped pistol is a package with the glass priced in.

Optics that fit
21
No plate needed
21
Plate required
0
Footprints accepted
Shield RMSc / Holosun K
Open the interactive checker on the HK CC9
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Mounts directly (Shield RMSc footprint)(21)

These optics carry the Shield RMSc footprint the slide is cut for. Screws, recoil bosses, and pocket all line up, so they seat on the slide with no plate.

C&H Direct Mount Optic for HK Optics Ready Pistols red dot for HK CC9
C&H Precision

C&H Direct Mount Optic for HK Optics Ready Pistols

$249.99

C&H direct-mount pistol optic for HK optics-ready pistols including VP9-family and CC9-style hosts.

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C&H Precision EDC red dot for HK CC9
C&H Precision

C&H Precision EDC

$199.99EPS / KShield RMSc

Compact open-emitter carry optic on the RMSc footprint with red, green, and MRS variants

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Osight K (RMSc 6 MOA Green) red dot for HK CC9
Osight

Osight K (RMSc 6 MOA Green)

$169.99Shield RMSc

Green-dot version of the open-emitter RMSc Osight K, with a 6 MOA green dot, side-loading CR1620, and motion sensor activation.

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Osight K (RMSc 6 MOA Open) red dot for HK CC9
Osight

Osight K (RMSc 6 MOA Open)

$159.99Shield RMSc

Entry-level open-emitter RMSc red dot with a 6 MOA dot, side-loading CR1620, and motion sensor activation.

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Osight SE Enclosed (2 MOA + 32 MOA Red MRS) red dot for HK CC9
Osight

Osight SE Enclosed (2 MOA + 32 MOA Red MRS)

$199.99Shield RMSc

Enclosed-emitter red dot on the RMSc footprint with a switchable 2 MOA dot and 32 MOA circle, side-loading battery, and IPX7 sealing.

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Osight SE Enclosed (6 MOA Green) red dot for HK CC9
Osight

Osight SE Enclosed (6 MOA Green)

$199.99Shield RMSc

Enclosed-emitter green dot on the RMSc footprint with a side-loading battery and a 75,000-hour runtime, at a value price.

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Osight SE Enclosed (6 MOA Red) red dot for HK CC9
Osight

Osight SE Enclosed (6 MOA Red)

$179.99Shield RMSc

Enclosed-emitter 6 MOA red dot on the RMSc footprint with a side-loading battery, motion sensor, and IPX7 sealing for slim carry guns.

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C&H Precision EDC Enclosed red dot for HK CC9
C&H Precision

C&H Precision EDC Enclosed

$249.99EPS / KShield RMSc

Enclosed-emitter RMSc-footprint carry optic with a low-profile compact housing

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C&H Precision Max red dot for HK CC9
C&H Precision

C&H Precision Max

$339.99EPS / KShield RMSc

Large-window RMSc-footprint multi-reticle optic for compact pistols and shotgun plates

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Cyelee CAT EDG red dot for HK CC9
Cyelee Optics

Cyelee CAT EDG

$279.99Shield RMSc

One-ounce enclosed-emitter dot on the slim RMSc cut for carry slides

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Gideon Optics Judge II red dot for HK CC9
Gideon Optics

Gideon Optics Judge II

$229.99Shield RMSc

RMSc open-emitter carry dot with a protected 20mm window and side-loading CR1632.

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Gideon Optics Judge XL red dot for HK CC9
Gideon Optics

Gideon Optics Judge XL

$239.99Holosun KShield RMSc

Large-window 6 MOA dot for RMSc and Holosun K mounting patterns.

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Gideon Optics Valor Mini red dot for HK CC9
Gideon Optics

Gideon Optics Valor Mini

$299.99Shield RMSc

Enclosed 3 MOA RMSc optic with a side-loading battery and 6.25mm deck.

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Osight S Enclosed (Magnetic Charging) red dot for HK CC9
Osight

Osight S Enclosed (Magnetic Charging)

$249.99Shield RMSc

Enclosed-emitter RMSc red dot with a magnetic charging cover, OAL housing, and a 2 MOA + 32 MOA multi-reticle system.

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SIG Romeo Zero Elite red dot for HK CC9
SIG Sauer

SIG Romeo Zero Elite

$129.99Shield RMSc

Sub-half-ounce micro red dot on the Shield RMSc footprint for P365 and similar carry pistols

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Swampfox Sentinel II red dot for HK CC9
Swampfox

Swampfox Sentinel II

$249Shield RMSc

Mid-tier RMSc-footprint micro red dot with Shake N' Wake auto-on, recessed hood for lens protection, and a clean 3 MOA dot, $269 (red) or $299 with tritium.

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Vector Optics Frenzy FLEX 24x29 (SCRD-C77) red dot for HK CC9
Vector Optics

Vector Optics Frenzy FLEX 24x29 (SCRD-C77)

$229Shield RMSc

Large-window competition pistol dot with selectable 2 and 6 MOA reticles

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Vortex Defender-CCW Enclosed Solar red dot for HK CC9
Vortex

Vortex Defender-CCW Enclosed Solar

$259.49Shield RMSc

Closed emitter micro pistol optic with solar assist on the Shield RMSc footprint

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C&H Precision HNT-R Max red dot for HK CC9
C&H Precision

C&H Precision HNT-R Max

$399.99EPS / KShield RMSc

Camo RMSc-footprint hunting red dot for handguns, shotguns, and scout-style mounts

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Shield RMSc 4 MOA (Glass Edition) red dot for HK CC9
Shield Sights

Shield RMSc 4 MOA (Glass Edition)

$379.99Shield RMSc

The original RMSc that defined the slim-pistol footprint standard. UK-made glass-edition reflex sight with a 4 MOA dot, $379, the platonic Shield-cut optic.

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SIG ROMEO-X Compact Enclosed red dot for HK CC9
SIG Sauer

SIG ROMEO-X Compact Enclosed

$499.99Shield RMSc

SIG's enclosed-emitter pistol red dot on the RMSc footprint, with MOTAC motion activation and a side-loading CR1632.

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HK CC9 optic fitment FAQ

What optic footprint does the HK CC9 use?

The HK CC9 mounts red dots on a footprint HK spells out as RMSc / 407K, milled directly into the slide with no adapter plate in the stack. That single cut answers both micro patterns, so the Shield RMSc and the Holosun K family both bolt to the steel: the 407K and 507K, the enclosed EPS Carry and SCS Carry, the SIG Romeo Zero Elite and ROMEO-X Compact, the Vortex Defender-CCW, the Swampfox Sentinel II and the Gideon Judge II. The footprints that do not fit are the larger ones, the Trijicon RMR and the Holosun 507C, because the pocket is sized for micro optics rather than for a compact-slide dot.

Do I need an adapter plate to mount a red dot on the HK CC9?

No. The HK CC9 slide is cut for the Shield RMSc footprint and Shield RMSc optics bolt straight to the slide.

Does the SIG Romeo Zero Elite fit a HK CC9?

Yes. The SIG Romeo Zero Elite uses the Shield RMSc footprint that the HK CC9 slide is cut for, so it bolts straight to the slide with no adapter plate.

Do I have to file anything to run a Holosun 407K on an HK CC9?

No. HK specifies the CC9 cut as RMSc / 407K, a combined pattern rather than an RMSc-only pocket, and HK ships Optics Equipped CC9 pistols with a 407K mounted from the factory. That is the case where the usual two-lug versus four-lug argument does not apply, because the slide was milled for both patterns from the start.

Will a Trijicon RMR or Holosun 507C fit the HK CC9?

No. The CC9 pocket is the micro RMSc / 407K pattern. The RMR and 507C footprints are physically larger with different screw spacing, and there is no plate that grows a micro cut into a full-size one. Stay inside the RMSc and Holosun K family and the fit is direct.

Do HK VP9 optic plates work on the CC9?

No, and the CC9 does not need one. The VP9 optics-ready slide uses a numbered plate that drops into a plate pocket; the CC9 is milled for the optic itself, with no plate pocket for a VP9 plate to sit in. The two systems have nothing in common beyond the maker.

Keep reading

Optic footprints for other Heckler & Koch models

Every pistol with a footprint page