C&H PLT SIG P320X Optics Adapter Plate — RMR/SRO/Holosun

The C&H Precision PLT adapter plate is a purpose-built optics mounting solution for SIG P320 X-Series pistols, including Legion, X-FIVE, M17 and M18 configurations. Each plate is precision machined on HAAS CNC equipment and inspected through multiple quality checks by the family-owned C&H Precision operation in Coastal Georgia. Hardware is replaceable so damaged fasteners can be serviced without replacing the entire plate.

Key Specifications

• Compatible fit: Sig X-Series.
• Model designation: Sig P320 X Series.
• Optic cuts: RMR / SRO and specific Holosun footprints.
• Holosun models listed: 407C, 507C, 508T.
• Rear sight compatibility: 10-8 rear sight configuration.
• Finish: Anodized.
• Color: Black.
• Product type: Mount (optic-specific).
• Included hardware: Mounting screws included.
• Manufacturing: Precision machined on HAAS CNC in Coastal Georgia.

Designed for shooters who expect repeatable fitment and serviceable hardware, this adapter plate offers a straightforward route to mounting a range of popular reflex optics on SIG P320 X-Series pistols. The anodized finish and precision machining provide a stable, low-profile interface for range, competition, or everyday carry setups while replaceable fasteners simplify maintenance over the product life.