Trijicon Ascent 3-12x 40mm Rifle Scope - How good can you be? Find out with the Trijicon Ascent 3-12-x40 riflescope. Designed for quick target acquisition and shot placement using the BDC Target Hold reticle, the Ascent 3-12x40 delivers both CQB and long-range performance, edge-to-edge clarity and a 30mm tube diameter with aircraft-grade aluminum. This rugged, lightweight tactical riflescope is ready for anything. Edge to Edge Clarity Ultra Durable Purpose Driven Design