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Does the Holosun 407K X2 fit the Canik METE SFx?

Yes, with no adapter plate. You also need M3 or M4 screws; the ones in the optic's box are cut for a different thread.

Direct mount — cross-compatible

The slide is cut for Shield RMSc, and this footprint fits that cut with no adapter.

SlideCanik METE optic cut (RMSc plus RMRcc or RMR)
Optic footprintHolosun K
Optic screwsM3 or M4, by optic base · T10
Optic torque15 in-lb
Cost to mount$150–300

New to red dots? What footprint, plate, co-witness and the rest mean →

Screw thread trapThe METE's optic lid interface comes tapped M3 or M4, depending on which base is fitted, and Canik sells a screw set for each. Your slide is tapped M3 or M4. To tell which, turn an M3 screw in by hand only: if it catches and runs in smoothly, the slide is M3; if it wobbles and never bites, the slide is M4. Never put a driver on a screw that won't start by hand. The Holosun 407K X2 box holds M4 and #6-32 screws. Source: Canik OEM M4 optic screws (Midwest Gun Works) ↗; Canik OEM M3 optic screws (Midwest Gun Works) ↗; Holosun, HS407K-X2 (in the box: 2× M4×12, 2× #6-32×7.4) ↗.
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.With suppressor-height irons: Co-witnesses. A ≈0.290–0.315 in front sight normally sits in the lower third of the window on a direct cut. Mounted directly, the optic sits as low as the cut allows, the best case for a co-witness. This optic's window runs small (19.5 × 14.7 mm), so a front sight slightly off the ideal height is more likely to miss it. 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 mills the METE slide for two patterns at once. One is Shield RMSc, on every METE. The other changed during production: Canik lists RMRcc on earlier slides and RMR on later ones (METE SFT from serial 25CC08376, METE SFx from 26BY00001), and ships optic bases in the box. Only the RMSc pattern is listed as a fit here, because the second one depends on your serial. Check it against Canik's product page before buying an RMR or RMRcc optic. Holosun K optics bolt on and leave the RMSc rear posts unused.
GuidesShield RMSc vs Holosun K: which optic fits which cut · Suppressor-height sights: will your irons co-witness? · Red dot lost zero? Troubleshooting the mount

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 take this sheet with you.

Build sheet

Data compiled September 2026 · Optic Mounting
Pistol
Canik METE SFx
Optic
Holosun 407K X2
Footprint
Holosun K
Slide
Canik METE optic cut (RMSc plus RMRcc or RMR)
Mount
Direct mount — cross-compatible

Parts to order

1 ×Holosun 407K X2Holosun K footprint · 6 MOA$150–300
1 setOptic screws, M3 or M4The screws in the optic's box are cut for a different thread. Length depends on the optic; test-fit dry.—
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$150–300

Where to buy

Holosun 407K X2Holosun K footprintHolosun ↗
Suppressor-height sights, if yours are standardOptional, for a co-witness. Makers include Trijicon, Ameriglo, XS and Dawson

Fasteners: which bag

One set to buy, listed above; the rest come in the boxes. 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
Optic → slideM3 or M4, by optic baseCheck your slide's thread, then buy screws to match.
The slide's tapping decides the screw, not the optic. Start each screw by hand.Thread trapThe METE's optic lid interface comes tapped M3 or M4, depending on which base is fitted, and Canik sells a screw set for each. Your slide is tapped M3 or M4. To tell which, turn an M3 screw in by hand only: if it catches and runs in smoothly, the slide is M3; if it wobbles and never bites, the slide is M4. Never put a driver on a screw that won't start by hand. The Holosun 407K X2 box holds M4 and #6-32 screws.

On the bench before you start

  • Torque wrench — covering 15 in-lb (a 10–50 in-lb driver covers most jobs)
  • Driver bits — T10, 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
  • Witness-mark paint or lacquer — so you can see if anything moves later

Install spec

Optic torque15 in-lb
ScrewsM3 or M4, by optic base
DriverT10
Interface2 screws, 2 forward lugs (rear posts omitted)

Sequence

  1. Clear the pistol. Drop the magazine, lock the slide back, look and feel the chamber, then do it again.
  2. Remove the cover plate and set it aside with its screws.
  3. Degrease the slide cut and the optic base.
  4. Seat the optic on the slide's recoil lugs and check it sits flat with no rock.
  5. Fit the optic screws with blue threadlocker and torque to spec, alternating between them.
  6. Let the threadlocker cure before firing (check the bottle; usually a few hours to overnight).
  7. 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.

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.

The Canik METE SFx with other optics

Every optic on the Canik METE SFx, and how each mounts →

The Holosun 407K X2 on other pistols

Every pistol the Holosun 407K X2 fits →

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