Home / Pistols / Canik TTI Combat / Holosun 407C X2

Does the Holosun 407C X2 fit the Canik TTI Combat?

Page last updated . Data compiled September 2026 by the site administrator.

Yes, on a plate that ships with the pistol (Canik kit → RMR). The optic is the only part to buy.

Fits on the plate in the box

The Canik kit → RMR that ships with the pistol adapts the slide to this footprint.

What to buy

Optic
Holosun 407C X2 ($150–300)
Plate
None to buy: the Canik kit → RMR ships with the pistol. Look in the box.
Screws
Look in the pistol's box with the plates; if there are none, buy a pair made for this plate.
Iron sights
Standard-height irons: no co-witness, typically (not a rule). Suppressor-height irons: usually a low co-witness (estimated, why).
All in
$150–300 approximate street prices, September 2026
Same answer forThe Holosun 407C X2 goes on the Canik TP9 Elite SC, Canik TP9 SFx, Canik SFx Rival / Rival-S and Canik TTI Combat Master the same way: they share this slide's optic cut.
SlideCanik optic plate system
Optic footprintTrijicon RMR
Optic screwsper plate maker, not on file here · T10 / T15
Optic torqueper plate maker, not on file here (15 in-lb is the optic maker's figure for mounting it straight on a slide)
Plate to slideper plate instructions
Cost to mount$150–300
Will your iron sights co-witness?With standard-height irons: No co-witness. Standard-height irons sit well below any pistol red dot window and are only usable with the optic off. Suppressor-height sights fix that; a different optic won't. Little or no data: no sight maker publishes co-witness heights for standard-height irons with this pair, so "no co-witness" is the typical case, not a rule. Some optics still show factory-height irons in the lower third or lower fifth of the window, so check your own front sight against the window before you rely on it.With suppressor-height irons: Usually a low co-witness. A plate raises the optic, so suppressor-height irons ride near the bottom of the window: Night Fision, for one, lists its .290 in front sight as a lower 1/5 co-witness with RMR-class optics on GLOCK's MOS plate. A taller plate can drop them out of view, so check the plate's deck height before ordering sights. Estimated: no sight maker publishes heights for this pair, so that's the typical case for this kind of optic, not a guarantee: pistols don't standardize sight and optic heights the way rifles do.
How this slide mounts an opticCanik ships a multi-plate kit with most optic-ready models.

What to order, and how to fit it

The fit checker's build sheet for this pair, assuming sights of unknown height. Open it in the fit checker to set your sights, work out screw length from your own caliper readings, or copy it as text.

Rather not do it yourself? Mounting an optic is a short bench job for most gun shops and gunsmiths. Buy the parts under "Parts to order" and print this page for the shop: it lists what is not on file for this pair, so they know which figures to take from the makers, and ends with a blank log for whoever does the work. How an install goes, from the makers' manuals.

Build sheet

Data compiled September 2026 · Optic Mounting
Pistol
Canik TTI Combat
Optic
Holosun 407C X2
Footprint
Trijicon RMR
Slide
Canik optic plate system
Mount
Fits on the plate in the box

Parts to order

1 ×Holosun 407C X2Trijicon RMR footprint · 2 MOA$150–300
haveCanik kit → RMRCanik factoryin the box
1 setSuppressor-height sights, if yours are standardMeasure your front sight first, then compare it with the sight heights published for this slide and optic, where the sheet lists them. The height that co-witnesses depends on the slide and the optic; a slim slide needs less than a full-size one.optional
Estimated total: optic only (plate ships with the pistol)$150–300

Where to buy

Holosun 407C X2Trijicon RMR footprintHolosun — this item ↗
Canik kit → RMRShips with the pistol
Suppressor-height sights, if yours are standardOptional, for a co-witness. Makers include Trijicon, Ameriglo, XS and Dawson

Fasteners: which bag

You don't buy these. Screws come with the pistol, the optic and the plate, and they look alike. The thread is tapped into the slide or plate (the optic only has a clearance hole), so they decide the thread, not the optic.

JointThreadComes from
Plate → slideper plate maker, not on file hereSupplied with the plate.
Two kinds of short screw come with the pistol: these, for the plate, and the pair already holding the cover plate on the slide. They are different lengths, so keep them apart.
Optic → plateper plate maker, not on file hereLook in the pistol's box, with the plates. If there are none, buy a pair made for this plate.
Most mistakes happen here. The screws in the optic's box are cut for mounting straight onto a slide; a plate changes the stack, so the plate maker supplies the right pair. If your plate came without screws, measure before you buy.

On the bench before you start

  • Torque wrench — set to the figure in your optic's manual
  • Driver bits — T10 / T15, fully seated so they don't round the head
  • Calipers — for the screw length check below
  • Blue removable threadlocker — Vibra-Tite VC-3 or Loctite 242. Never red.
  • Degreaser — isopropyl or brake cleaner
  • A parts tray — you'll have three bags of look-alike screws
  • Witness-mark paint or lacquer — so you can see if anything moves later

Install spec

Plate to slideper plate instructions
Optic torqueper plate maker, not on file here (15 in-lb is the optic maker's figure for mounting it straight on a slide)
Screwsper plate maker, not on file here
DriverT10 / T15
Interface2 screws, 2 forward recoil lugs

Not on file for this build

Where a figure is not published, this sheet says so instead of guessing. Get these from the maker or your gunsmith.

Plate → slide thread
Not published where this site could find it. Ask the plate maker, or check the screw bag's label.
Optic → plate thread
Not published where this site could find it. Ask the plate maker, or check the screw bag's label.
Optic screw torque
Not published for this plate. Use the plate maker's figure, not the optic maker's, which is for a slide.
Screw length
Never published here, because it depends on your exact stack. Measure it and test-fit dry.

Sequence

  1. Clear the pistol. Drop the magazine, lock the slide back, look and feel the chamber, then do it again.
  2. Remove the factory cover plate and set its screws aside. They are not optic screws.
  3. Degrease the slide pocket, both faces of the plate and the optic base. Oil under a plate lets it move.
  4. Seat the plate on the slide, check it sits flat with no rock, and fit its screws with blue threadlocker.
  5. Torque the plate to spec, bringing the screws up evenly rather than one at a time.
  6. Seat the optic on the plate's recoil posts, fit the optic screws with blue threadlocker, and torque to the optic spec.
  7. Let the threadlocker cure before firing (check the bottle; usually a few hours to overnight).
  8. Confirm zero at your working distance, then re-check torque after the first 100–200 rounds.

Before you fire it

  • Screw length checked dry: it must not bottom out on the slide or reach the striker channel.
  • Optic sits flat with no rock, and the screws pulled up evenly.
  • Torque set with a wrench, not by feel. Witness-mark the screws so movement is visible later.
  • Threadlocker cured.
  • Function check, then zero confirmed live.

Screw length is the one that hurts

Too long and a screw bottoms out on the slide or reaches the striker channel; too short and it strips under recoil. This sheet gives the thread but can't give the length, which depends on your exact plate and optic stack. Test-fit dry and count threads.

Shop log (fill in)

Torque wrench, and setting 
Plate screws: thread, length, torque 
Optic screws: thread, length, torque 
Threadlocker used (product, or none) 
Witness marks applied 
Zeroed at (distance, ammunition) 
Torque re-checked after (rounds) 
Fitted by, and date 

Sight co-witness

Confirm the firearm is unloaded before any work on the slide. Mounting an optic is gunsmithing: stay within your competence and use a gunsmith when a job is past it. Provided as-is with no warranty; you use this at your own risk. Prices are approximate street-price bands from September 2026. Torque and fitment figures come from manufacturer documentation; confirm against the current manuals for your pistol, optic and plate before installing. Not affiliated with or endorsed by any manufacturer.
Sources for this page (2)

Data compiled September 2026 from these documents. A figure with no source here is marked "not on file" on the page. How the data is checked.

Last checked against the makers’ documents. The Holosun 407C X2: window, weight and dot checked against the maker's own spec sheet or manual on September 26, 2026. Not individually re-checked since it was compiled (September 2026): the slide’s data and the plate.

Something on this page wrong? Tell us what it should be, and include a source: nothing changes without one.