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.

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 the ultimate in all weather construction. They are waterproof, nitrogen filled and provide a lifetime of internal fog protection for inclement weather.

ZACT-7 Revcoat Multi-Coating (S-TAC Series)
All Sightron S-TAC 30mm Series Riflescopes feature ZACT-7 seven layer multi-coating with precision ground glass. These lenses provide superior light transmission and resolution for the ultimate in performance.

S-TAC One-Piece Main-Tube
All scopes in the S-TAC 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.