The Leupold 171117 BackCountry 2-Piece 30 mm High Base and Ring Combo mounts your riflescope to Tikka T-3/T3x Hunter rifles (sold separately). The lightweight 7075-T6 aircraft-grade aluminum construction delivers long-lasting strength and durability, and the combo is designed for easy installation. Sleek matte finish. Leupold 171117 BackCountry 2-Piece 30 mm High Base and Ring Combo Black - Scope Rngs And Rifle Accessories at Academy Sports