More than half the Corps has yet to decide on the Blended Retirement System

Marines with II Marine Expeditionary Force Support Battalion, II MEF Information Group, provide security during a battalion field exercise at Camp Lejeune in North Carolina on July 17, 2018. Lawmakers in Congress are hoping to finalize their annual defense budget policy bill this week. (Lance Cpl. Camila Melendez/Marine Corps)

The deadline is fast approaching for Marines to decide whether to opt-in to the new Blended Retirement System or stick with the legacy system.

And as of July 10, 118,000 eligible Marines have yet to make a choice, according to a MARADMIN posted Monday.

Marines have until December 31 to make their selection via Marine Online, or MOL. The Blended Retirement System is irreversible after a Marine registers on MOL.

And as of May 2, 2018, 35,743 Marines opted-in the new retirement system out of 175,627 eligible.

All new Marines entering the Corps as of January 2018 are automatically enrolled into the Blended Retirement System. Active-duty Marines with fewer than 12 years of service as of Dec. 31, 2017, and Marine reservists with less than 4,320 retirement points are eligible to opt-in to the new system.

The Blended Retirement System was born out of the fiscal year 2016 National Defense Authorization Act.

“Commanders are required to inform all opt-in eligible Marines who have not made a retirement choice of the 31 December 2018 deadline,” the MARADMIN reads.