Just their brand of scope that they happen to be associated with , very good scopes, around 1200$ + I like them , crisp , clear, all around awesome scope, i still like my nightforce scope much better , but it's also about 500$ more than the same quality huskemaw , personally , (and i'm not knocking this brand), don't like leupold much , i used to till i got the more highend deals , it's like night and day. Also Huskemaw optic , same as nightforce etc.... have a system by where you can remove your turret on top and put it on "0" after you have it sited in at 100 or whatever yardage you site in at , then you just need to go up or down to be dead on at which ever yardage, the side adjustment allows you to compensate for winddrift. Theoretically tou should be able to shoot the nuts off a moose at 1000+ yards, not that it's necessarily ethical , and I said theoretically. I shoot no farther than I am comfortable with,while hunting and I don't shoot beyond what I am able to drop. you don't want wounded animals out there. If you have practised and can make the shot consistently at whatever yardage you shoot , then fill your boots, if you have the slightest fear or discomfort ,,,,, don't ! it's that simple , but getting back to it , yes they are for real and it works but cost is up there

Also get the video they offer is worth it , plenty of good info in it

hope my lil rant helped . helped