ATACR 5-25X56

Hi folks, I'm interested buying ATACR 5-25X56 but there is several Reticles options.
Which is "correct" reticles used by USMC rifles? Also is there any difference Civvy one and issued one?
Thank KAZ
Tremor 3 bud. There's no difference between the Civ T3 and the Mil T3.

Sick choice of scope mate