“By using MBL’s, less time is required” ⇒ change “MBL’s” to “MBLs”—it’s not a possessive.
If you look in an old enough style guide (the current standard is as you say), it will say to use an apostrophe when you pluralize an acronym. Wikipedia agrees.
Agree with everything but:
If you look in an old enough style guide (the current standard is as you say), it will say to use an apostrophe when you pluralize an acronym. Wikipedia agrees.