American Defense AD-T1-10 STD Riflescope Optic Mount, Black The aim point t-1/T2/h-1 micro mount 1 piece is a one piece unit that places the optic in a true Absolute co-witness height. Centerline height with the T1/T2/H1 optic is 1.5. This mount also fits the vortex spark and Primary arms micro dot ( lower 13rd co-witness). It features the patented QD auto lock lever System to accommodate both in spec and out of spec rail systems. Does not require proprietary tools for adjustment Can be adjusted with your finger or a flat blade screwdriver Lever can be configured to lock to the front or the rear Superior clamping surface to insure maximum rail engagement