Leapers MT950X Carry Handle features a matte black anodized CNC machined 6061-T6 aluminum and steel construction. Staked and knurled thumb wheels can be tightened by hand in the field or by a flathead screwdriver or M6 hex wrench (recommended torque value: 25 in-lbs). A2 dual aperture and 6/3 windage drum. MIL-STD-1913 Picatinny compatible squared recoil lugs for a secure zero hold and return to zero. Compatible with inline rail mounted front sights and taller F-marked front sight bases