Q&A for Spuhr 34mm Separated Rings Rifle Scope Mount for Picatinny Rail — 5 Questions & 6 Answers

To mount the Sig Sauer Sierra6BDX 5-30x56mm Rifle Scope on a Sig Cross the Spuhr 34mm Separated Rings Rifle Scope Mount for Picatinny Rail would be a good option. I recommend measuring the out diameter of the objective lens housing in order to determine what height rings you need. The Spuhr ISMS 34mm Rifle Scope Mounts at the link below may be a better option because you can get them with a height higher than 34mm which may be needed for that scope.
https://www.opticsplanet.com/spuhr-34mm-riflescope-mount.html?_iv_ring-height=37-mm,38-mm,39-mm,48-mm

Yes, the Spuhr 34mm Separated Rings Rifle Scope Mount should work with that set up. I would consider getting this Spuhr mount at the link below because it will give you more clearance with a 56mm objective lens.
https://www.opticsplanet.com/spuhr-34mm-riflescope-mount.html?_iv_ring-height=39-mm

This taller model is better.

The Spuhr Optic Leveling Kit is an inexpensive, easy-to-use tool for indexing the reticle to the Picatinny rail just below the turret cluster of the scope. The matching wedge is inserted from the side and as the ramped surfaces of the wedge and base engage, the top of the wedge rises upwards and contacts the turret cluster, automatically leveling the reticle to the mount.