Sig Sauer TANGO MSR Compact Rifle Scope 1-6X Magnification Second Focal Plane Illuminated BDC 6 Reticle 24mm Objective 30mm Main Tube Black Includes. Save money with this mount-free option. Specifications for Sig Sauer 1-6x24mm TANGO MSR Compact Rifle Scope 30 mm Tube Second Focal Plane: Manufacturer: SIG SAUER Objective Lens Diameter: 24 mm Magnification: 1 - 6 x Reticle: BDC Tube Diameter: 30 mm Reticle Focal Plane: Second Focal Plane (SFP) Finish: Black Color: Black Handle Color: Black Size: 30mm Package Content: Sig Sauer 1-6x24mm TANGO MSR Compact Rifle Scope 30 mm Tube Second Focal Plane SIG SAUER Infinite Guarantee