The single pin caster wheels for the M1101/M1102 trailer’s landing legs have been replaced by a 4-bolt caster with the same NSN 5340-01-611-2350.
Note, this 4-bolt caster appears as Item 7 of Group 1507 in TM 9-2330-392-13&P (Dec 12).
It should also appear as Item 15, but the TM still shows the single pin caster as Item 15. Until the TM is updated, make a note of this change.
Thanks to CW3 Brandon T. Layne of the Kentucky Army National Guard for this caster catch!