Adapter Plate for SIG SAUER® P320 RXP ROMEO1-Pro and 407C 507C RMR Red Dot Optic For Sale

The TSA® AP-00086 Adapter/Filler Plate is designed for select SIG SAUER® P320 slides with a ROMEO1PRO-style optic cut and the additional factory-threaded RMR mounting holes shown in the product pictures.

It allows compatible slides to mount RMR-footprint optics such as the Trijicon® RMR and SRO and the Holosun® 407C, 507C, and 507 Competition.

Precision CNC-machined from 7075-T6 aircraft-grade aluminum, the plate features a matte-black MIL-SPEC Type III hard-anodized finish for strength, corrosion resistance, and a clean factory-style appearance.

At approximately 0.81 mm thick, the plate maintains an ultra-low-profile installation and fills the open space surrounding a compatible RMR-footprint optic. The plate is retained by the optic mounting screws and does not require separate plate-to-slide screws.

Four sets of mounting screws with pre-applied removable threadlocker and a hex key are included.

Important: Not every P320 slide with a ROMEO1PRO-style cut has the additional RMR mounting holes required for this plate. Compare your slide carefully with the product pictures before ordering.

• Adapts select SIG SAUER® P320 ROMEO1PRO-cut slides to RMR-footprint optics
• Designed for slides with additional factory RMR mounting holes
• Precision CNC-machined from 7075-T6 aircraft-grade aluminum
• Matte-black MIL-SPEC Type III hard-anodized finish
• Ultra-low-profile design measuring approximately 0.81 mm thick
• Acts as an adapter and filler plate for a cleaner optic installation
• Retains the rear iron sight on compatible slide configurations
• No separate plate-to-slide screws required
• Includes four optic screw sets with pre-applied threadlocker
• Includes hex installation key

• SIG SAUER® P320 X-Five Legion
• SIG SAUER® P320 X-Carry Legion
• SIG SAUER® P320 XCompact RXP
• SIG SAUER® P320 Full-Size RXP
• SIG SAUER® P320 X-Full
• Other compatible P320 slides with the same required optic-cut configuration

• Trijicon® RMR®
• Trijicon® SRO®
• Holosun® 407C
• Holosun® 507C
• Holosun® 507 Competition
• Other compatible RMR-footprint optics with matching dimensions and screw requirements

• A compatible ROMEO1PRO / DeltaPoint Pro-style optic cut
• Two additional factory-threaded RMR mounting holes
• The same mounting-hole arrangement shown in the product pictures

• P320 slides with only ROMEO1PRO / DeltaPoint Pro mounting holes
• P320 slides without the additional RMR mounting holes
• RMSc or Holosun K-footprint optics such as the 407K, 507K, or EPS Carry
• ACRO-footprint optics
• Standard GLOCK® MOS or other firearm optic systems

Compatibility Notice: SIG SAUER® has produced multiple P320 optic-cut configurations. The firearm model name alone does not guarantee fitment. Remove the factory optic cover and compare the mounting-hole pattern with the listing pictures before ordering.

• One TSA® AP-00086 Adapter/Filler Plate
• Four Sets of Optic Mounting Screws
• Pre-Applied Removable Threadlocker
• Hex Installation Key
• Protective Retail TSA® Product Line
• Model: AP-00086
• Product Type: Optic Adapter / Filler Plate
• Slide Interface: Select SIG SAUER® P320 ROMEO1PRO-Cut Slides
• Optic Interface: RMR Footprint
• Material: 7075-T6 Aircraft-Grade Aluminum
• Finish: Matte Black MIL-SPEC Type III Hard Anodized
• Thickness: Approximately 0.81 mm
• Manufacturing: Precision CNC Machined
• Mounting Method: Retained by the Optic Mounting Screws
• Color: the firearm is completely unloaded.
• Remove the factory optic cover plate.
• Verify that the slide has the required additional RMR mounting holes.
• Clean the slide, adapter plate, optic base, and screw threads.
• Position the AP-00086 inside the factory optic cut.
• Place the compatible RMR-footprint optic over the adapter plate.
• Select the correct included screw set.
• Verify screw thread, length, and internal clearance before tightening.
• Tighten according to the firearm and optic manufacturers' recommendations.
• Confirm optic operation and establish zero before use.

Professional gunsmith installation is recommended when fitment, screw selection, or proper installation is uncertain.

IMPORTANT SCREW NOTICE

The AP-00086 does not use separate plate-to-slide screws. The plate is retained between the slide and optic by the optic mounting screws.

Multiple screw sets are included because optics and slides may require different screw lengths, threads, and head dimensions. The installer must identify the correct screw set for the specific optic and slide combination.

Verify that the screws engage securely without bottoming out, protruding into the slide, interfering with internal components, or preventing the optic from seating flat. Never force an incorrect screw.

TERMS & CONDITIONS
• 30-day returns accepted
• Item must be returned in original condition
• Buyer is responsible for confirming slide and optic compatibility
• Buyer is responsible for selecting the correct mounting screws
• Buyer is responsible for proper installation and torque
• Professional installation is recommended
• No sales where prohibited
CALIFORNIA NOTICE

Buyer is responsible for ensuring compliance with all applicable local, state, and federal laws. This product is an optic mounting accessory and is not a firearm.

SHIPPING
• Fast and free shipping from the USA
• Ships next business day
• Tracking provided
• Secure professional packaging
• No international orders
• No freight-forwarding or export-reshipping addresses
TRADEMARK DISCLAIMER

TSA® and The Southern Armorer® are trademarks of The Southern Armorer LLC.

SIG SAUER®, P320®, RXP®, ROMEO1PRO®, Trijicon®, RMR®, SRO®, Holosun®, 407C®, 507C®, 507 Competition®, and DeltaPoint Pro® are trademarks of their respective owners.

Trademark names are used only to identify compatibility and intended application. No affiliation, sponsorship, or endorsement is implied.

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The Southern Armorer LLC develops optics mounting solutions, adapter plates, installation hardware, and firearm sighting accessories.

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