The rifle scope will come with a 4 inch sunshade. Vortex does not currently offer it as a stand alone accessory.
Any set of 34mm extra high rings will work for this scope.
At this time, it is only available in the Hard Anodized finish.
To mount the Vortex Razor HD Gen II 4.5-27x56mm Rifle Scope to a Sig 716 Tread I recommend using a cantilever or one piece mount. The Spuhr 34mm Cantilever Rifle Scope Mount 34mm high mount at the link below will work well. However, it is constructed out of aluminum and not steel. The Badger Ordnance 34mm Scope Rings at the second link below are constructed of steel and aluminum.
https://www.opticsplanet.com/spuhr-34mm-riflescope-mount.html?_iv_ring-height=34-mm
https://www.opticsplanet.com/badger-ordnance-scope-ring.html?_iv_fabric-material=steel&_iv_parent-tube-diameter=34-mm&_iv_ring-height=1-dot-275-in
Yes, the Vortex Razor HD Gen II 4.5-27x56mm Rifle Scope has an etched reticle. So if the batteries die the reticle can still be used.
Please email us at techsales@opticsplanet.com so we can further answer your question.
Due to the 56mm objective lens, an extra high set of rings must be used.
You will want to use MPN: E-10 and MPN: O-56 here:
https://www.opticsplanet.com/vortex-defender-objective-flip-caps.html
Here are some Vortex mounting suggestions:
https://www.opticsplanet.com/vortex-viper-extended-cantilever-mount.html
https://www.opticsplanet.com/vortex-precision-qr-extended-cantilever-mount.html
https://www.opticsplanet.com/vortex-precison-matched-riflescope-rings.html
You can also reach out to us at techsales@opticsplanet.com and we can provide you more recommendations.
High rings should work for your setup.