C&H Precision Sig P320 Legion Adapter Plate – R1P/DPP Cut

This adapter plate from C&H Precision is made for the Sig P320 Legion (M17/M18) and provides an R1P/DPP cut with a Trijicon/Holosun pattern footprint. It is precision machined and finished in black anodize for a durable, low-profile mounting solution. Mounting hardware is included and designed to be serviceable so damaged hardware can be replaced without replacing the plate.

Key Specifications

• The style is Red Dot Optic Mount intended for slide-mounted optics.
• This product ships as 1 piece for single-optic installation.
• The model fit is Sig P320 Legion (M17/M18) as specified by the manufacturer.
• The plate is machined from 6061 aluminum for a balance of strength and weight.
• The finish is black anodized for corrosion resistance and reduced reflectivity.
• The fitment is specified as Sig P320 platform compatibility.
• Product type is listed as Mount for optic attachment.
• The footprint provided is Trijicon/Holosun pattern to accept compatible optics.
• All mounting hardware is stainless steel and is included with the plate.
• The design features a patented stainless steel T-Nut that provides an industry-leading six to seven threads of engagement.

Engineered and quality-checked by a small U.S. manufacturer, this adapter plate delivers a practical, serviceable interface between your Sig P320 Legion slide and a range of popular mini red-dot optics. Its anodized 6061 aluminum construction and replaceable stainless hardware keep weight low while providing durable attachment points, making it a sensible choice for shooters who require a precise, low-profile mounting solution that integrates with Trijicon and Holosun footprint optics.