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Sig Sauer P320 Optics, Filler Plates, and Adapter Plates

Below are the best Holosun Optics, Filler Plates, and Adapter Plates we recommend for the Sig P320 platform. If you have a new P320 any of the RMR optics can mount on the slide but we recommend using a filler plate for added security. If you plan on mounting a "K" series optic like the 407K, 507K, or EPS Carry, you'll need the correct adapter plate.

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We recommend you read our Sig P320 Optics Fitment Guide to learn more about the different slide cuts the Sig P320 has if you have a model that is from 2020 or earlier.

These optics and adapter and filler plates are for the M17, M18, Legion, Xten, AXG, XCarry, XCompact, Spectre, X5, Etc but you must know what slide cut you have for compatibility. So make sure you read our guide!

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