Hi Joe, The Canik Mete MC9 Prime uses a modified RMSc footprint, allowing for direct mounting of compatible optics like the Holosun K Series, EPS Carry Series, and SCS Carry.
The Holosun K Series is generally the least expensive option among the three.
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Stay safe & have a great day!

Hi Joe and welcome. One of the best Holosun bang for the buck optics is here: -- budsgunshop.com/product_info.php/products_id/128939/holosun+x2+1x+2+32+moa+red+dot+sight ----------- Cheers, stay safe and enjoy!

Yes, many Holosun optics will fit the Canik TP9 series, including the MC9 Prime. The Canik MC9 Prime uses a modified RMSc footprint, which is compatible with Holosun's K series, EPS Carry series, and SCS Carry models.
Specifically, the following Holosun models will likely fit:
Holosun K series: 407K, 507K
Holosun EPS Carry series: EPS Carry
Holosun SCS Carry: SCS Carry
Important considerations:
Footprint:
The Canik MC9 Prime has a modified RMSc footprint, so ensure the Holosun optic you choose also uses the RMSc or a compatible footprint.
Screws:
Holosun K series optics typically come with M3 screws, which are suitable for the Canik MC9 Prime.
Adapter plates:
Some Holosun models, like the EPS Carry, may require an adapter plate to fit the MC9 Prime.
Co-witness:
Ensure the chosen optic allows for proper co-witnessing with the iron sights.
Overhang:
Some full-size Holosun optics may overhang the slide on the MC9 Prime.