MCO 5104.1_ is listed as currentCurrent in the MCPEL catalog as of our last index refresh (2026-10-05). Status is mirrored from that catalog, re-checked weekly — every change is logged.
Where the text of MCO 5104.1_ lives
Joint publication:OPNAVINST 5100.27C — NA VY AND THE MARINE CORPS LASER HAZARDS CONTROL PROGRAM Current
The Marine Corps catalog (MCPEL) lists MCO 5104.1_ but holds no text for it; the order's text is published as OPNAVINST 5100.27C, a U.S. Navy publication. Read OPNAVINST 5100.27C for the text of this order.
Basis: proven from the source link, mapped 2026-09-28. lead corpus text names the MCO: "MCO 5104.ID" (OCR of MCO 5104.1D); catalog title "Navy and the Marine Corps Laser Hazards Control Program" (source)
MCO 5100.34A — DEADLINE SAFETY OF USE MESSAGE INSTRUCTIONS TO SUSPEND OPERATIONS OF MARINE CORPS GROUND EQUIPMENT AND WEAPONS SYSTEMS, SAFETY OF USE MESSAGES AND MAINTENANCE ADVISORY MESSAGES Current
MCO 5100.8 — MARINE CORPS OCCUPATIONAL SAFETY AND HEALTH (OSH) POLICY ORDER Current
MCO 5104.2 — MARINE CORPS RADIATION SAFETY PROGRAM FOR DEPLETED URANIUM AMMUNITION Current
MCO 5110.1_ — MOTOR VEHICLE TRAFFIC SUPERVISION Current
This is an unofficial index built from the public catalog. The controlling copy is
always the one on MCPEL — verify there
before citing MCO 5104.1_ in an official product.