- Fast Focus Eyebell: Featured with all SIII Series Riflescopes. Allows for quick and easy adjustments when in the field. Diopter adjustment ranges from -2.0 to +1.0 settings.
- Side Focus System: Side Parallax focus is available on all SIIB SS models and SIII SS LR Series Riflescopes. Designed for ease of use in prone and bench shooting.
- SIII Series One-Piece Main-Tube : All scopes in the SIII series feature a 30mm one-piece Main-Tube made from high quality Aircraft aluminum. Tube thickness is more than twice as thick as one inch models to provide maximum rigidity. All models are fogproof, shockproof and waterproof.
- ExacTrack: This scope features Sightron's unique ExacTrack windage and elevation adjustment system. No other system on the market comes close to the precision and performance of ExacTrack.
- All Weather Construction: This scope features Sightron's unique ExacTrack windage and elevation adjustment system. No other system on the market comes close to the precision and performance of ExacTrack.