Mars is much improved over the Trident -Pro. This includes a choice of reticle color(amber/red), choice of battery(AA/lithium), click adjustment focusing the objective lense. large hex-head screws for base mounting, on/off switch with a stand-by mode. I had problems with the ITAR requirements, but the Optics Planet Reps were really helpful and that problem resolved quickly. The photocathode tube died after about 3 hours of use. I contacted ATN and it was repaired and returned in about 12 days. Zeroing was difficult in that the elevation and windage adjustments initially did not seem to translate to the crosshairs. Eventually the scope did zero and seems to be holding for my .308. I have an ATN Trident-Pro 4 Gen 2+ CGT that I have used for about 100 hours and have fired about 200 rounds at ranges from about 200-250 yards in clear star-light conditions and does require IR to illuminate shadowed areas in the field. The ATN MARS 4 Gen3 can acquire targets at 250-300 yards under similar conditions and can detect movement and observe shapes at 400-500 yards and doesn't require IR to see into shadowed areas in the field. The weight of the scope, base and rifle (DPMS .308LR) comes in under 11 pounds which is good for off-hand shots but it's easier to use in conjuction with a NV monicle for observation until a target is acquired. All-in-All night hunting with NV is WAY different the day hunting and takes adjustment and practice. I'm satisfied with ATN and Optics Planet products and service and will recommend and buy other ATN products (via Optics Planet)in the future with the proviso that newcomers to the NV world need to research this subject carefully and understand fully the various generations of NV devices, as well as manufacturers and purposes of the various devices.
Pros: much improved over the Trident-Pro 4x cgt
Cons: tube died after3 hours use, some difficulty in zeroing, 4 pin connector for the remote switch, needed washers to attach the quick release mount to the scope
This review was written in the old system and had content requirements that are different than reviews written today.