How to Install a Sig Romeo1 Pro

Published on November 1, 2019
Duration: 8:01

This guide details the installation of a Sig Romeo1 Pro red dot sight onto a Sig P320 pistol. It covers slide disassembly, removal of internal components to access the optic plate, and proper reassembly. Key steps include using a 3/32 Allen key for plate screws and applying a specific torque of 30 inch-pounds (or 25 inch-pounds with a forward bias) for optic mounting screws.

Quick Summary

Sig Sauer recommends a torque specification of 30 inch-pounds for mounting the Romeo1 Pro. The presenter in this video uses 25 inch-pounds, biasing the optic forward to account for recoil.

Chapters

  1. 00:00Introduction & Safety Check
  2. 00:30Slide Disassembly
  3. 01:29Internal Component Removal
  4. 02:13Optic Plate Removal
  5. 02:55Optic Preparation
  6. 03:57Optic Installation & Torque
  7. 05:25Slide Reassembly
  8. 06:13Final Assembly & Function Check
  9. 07:10Conclusion & Battery Install

Frequently Asked Questions

What torque specification should be used when installing a Sig Romeo1 Pro on a Sig P320?

Sig Sauer recommends a torque specification of 30 inch-pounds for mounting the Romeo1 Pro. The presenter in this video uses 25 inch-pounds, biasing the optic forward to account for recoil.

What tools are needed to remove the optic plate screws on a Sig P320 slide?

A 3/32 Allen key is required to remove the optic plate screws. If the screws are stuck due to thread locker, tapping the Allen key with a hammer can help loosen them.

What internal components must be removed from the Sig P320 slide to access the optic plate?

To access the optic plate screws, you must first remove the slide's backplate, then the extractor and striker assembly. This clears the way for the Allen key.

How do you properly prepare the Sig Romeo1 Pro before mounting it to the slide?

Before mounting, ensure the Sig Romeo1 Pro is placed inside its protective metal shroud. This shroud helps protect the optic during installation and use.

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