The CNVD-LR is the lightest that has good magnification range and performance with an L3 tube. The focus lever is awesome and easy to access.
UNS LR A3 (aka PVS-30LW) gives you PVS-30 performance for 30% less weight. Just be aware that some use Elbit tubes and others L3. The Elbit is a good option if you’re going to operate in mixed lighting, while the L3 beats everything in very dark no moon conditions.
PVS-27 re-tubed with an L3 has fantastic light gathering ability with that enormous objective, but it’s pretty heavy and bulky, so you might have to adjust your rifles to mount it properly depending on accessories.
ClipNV-series is pretty lightweight with Elbit tubes and recoil rated for 50BMG.