Sig Sauer Airguns Air T4 Scope Black 1-4x 24mm 1" Tube Mil-Dot Reticle The Sig Air T4 rifle scope features a low profile, tactical design with a 1" diameter tube; 1x to 4x adjustable magnification with a quick focus ring; 24mm, Multi-Coated objective lens; Mil-Dot reticle; Windage and Elevation adjustable with toolless turrets. Includes Picatinny scope rings. Brand Sig Sauer Airguns Category Rifle Scopes Model Air T4 Magnification 1-4x Tube Diameter 1" Color Black Reticle Mil-Dot Material Aluminum Firearm Type Air Rifle Field of View 91.70 - 23.62 ft @ 100 yds Objective 24mm