That should be pretty easy to determine. Looking at your turret. How many lines between the numbers i.e. between 0 & 1 or 1 & 2... it should have either 4 or 10.
If it has 4 it will be MOA as most NXS that offer MOA are 1/4 moa.
If it is a MIL/MIL setup there will be 10 lines between your 0-1, 1-2, 2-3 etc. Representing .10 mil or 1/10 which is what all MIL/MIL NXS are set for (that I have seen).
A .10 mil adjustment is .36" @ 100yds.... three- tenths equals 1.08" @100yds. A 1/4 MOA = .25" @ 100yds
A good number of the Leupold MK4's were Mil/Moa for some goofy reason, Mil reticles & Moa turrets... yeah, doesn't make sense to me either... I traded mine in short order
Hope that helps some,