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That looks like a good no nonsense scope.
16.2 oz about 460g so not too heavy either.

The vx3 HD 4.5-14 is 13.3 oz and the same price.

Careful adjustment fore and back, checking several shooting positions and powers.
A small cheek riser glued onto the butt.

VX3 HD 4.5-14 CDS
This is the lightest.
You will want good mag for best shot placement with the Grendel.
Eyebox if the VX 3i is not so good and relief varies with power. Wouldnt notice if you...