Bought the 4x16 and after shooting it with great results,bought the 6x24 too.The 6x24 has ZMOA-1 instead of ZMOA-2 in the 4x16.
It would have been nice if the instructions would have explained the Zero stop.You may have to take it off to be able to sight the gun in.
Make sure to take the stop off or have that little wrench with you when sighting in.Easy set up once you do it once.