Tikka 30mm One Piece Scope Mount by Beretta USA

I dont get it. Are the rings locked in place? Kind of looks like the front one is but the back one isnt? If they are locked in place, that's a deal breaker. If they aren't, how the heck is it any better than the rings just clamping on the dovetail vs this additional base?
 
I dont get it. Are the rings locked in place? Kind of looks like the front one is but the back one isnt? If they are locked in place, that's a deal breaker. If they aren't, how the heck is it any better than the rings just clamping on the dovetail vs this additional base?
They’re locked
 
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