I hope this assists with some clarity.
SHV:
•Entry-level Nightforce® riflescope
•Developed for all around use
•High-Quality glass with simplified features
•Best selling MOAR reticle
•ZeroSet™ elevation or capped adjustments
NXS:
•Hard-use Nightforce® product line
•Legacy product line that established Nightforce within the marketplace
•Used by elite military snipers and warfighters
•High-quality glass and features
•Positive clicks for windage and elevation dialing
•ZeroStop™ elevation adjustment
NX8:
•New generation Nightforce® product line with NXS-type ruggedness in a mid-range F1 option
•8x magnification zoom ratio
•Compact and lightweight
•High-quality glass and features
•Built for extreme durability
ATACR:
•Highest level product Nightforce® has to offer
•Most advanced technology features
•Used by long range competitors, elite military units and extreme long range hunters
•ED Glass with high performance features
•ZeroStop™ /ZeroHold™ elevation adjustments
•Power Throw Lever integrated to magnification ring
•Digillum™ – digital reticle illumination
•Flip-up caps standard