FAQ: MOA
Yes, you can use a 20 MOA or 0 MOA scope mount with a MIL-based (MRAD) scope. The use of an MOA-angled mount does not affect how the scope’s internal adjustments function; it simply changes the starting point of the scope’s alignment.
For example, a 20 MOA mount tilts the scope downward relative to the bore, effectively giving you more upward (elevation) travel in the scope. This is especially useful for long-range shooting where more elevation adjustment is needed to compensate for bullet drop.
Although the mount is angled in MOA, it doesn't matter whether your scope uses MOA or MILs—it’s just a physical cant of the rail or base. A 20 MOA incline equals roughly 5.8 MRAD so you'll need to dial up approximately that amount more to zero your scope at close distances, depending on your rifle and cartridge.
A 0 MOA mount is flat (no cant), and as such, has no effect on your elevation range—it simply centres the scope relative to the bore.
Summary:
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You can absolutely use an MOA mount with a MIL scope.
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It does not affect your MIL adjustments—only the zeroing position.
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20 MOA = ~5.8 MRAD of downward cant (extra upward adjustment available).
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0 MOA = flat; no added cant or benefit for long-range elevation.