Yes, the EOTech Vudu 3.5-18x50 FFP Precision Rifle Scope features oversized and precision-machined turrets with the EZ Chek Zero Stop feature, allowing you quickly dial adjustments and return to zero, even in low-light conditions.
The EOTech Vudu 3.5-18x50 FFP Precision Rifle Scope can be used on a Marlin 1895 45-70.
This Vudu will absolutely work well on a SCAR 20S - When it comes to optics on the SCAR 20, the important thing is the mount, as the SCAR is notoriously hard on optics and the proper mount can mitigate that. I highly recommend the ADM Delta, as ADM specifically designed it to be used for putting high power glass onto a SCAR.
https://www.opticsplanet.com/american-defense-manufacturing-34mm-cantilevered-dual-ring-scope-mount.html
The EOtech Vudu is made in Japan.
EoTech offers the 3.5-18x50 Vudu scopes in both FFP and SFP, the models on this page are FFP. The SFP model can be found here:
https://www.opticsplanet.com/eotech-vudu-3-5-18x50-sfp-riflescope-hc1-reticle-moa-parallax-adjustment.html