25.4/30mm One Piece Multi-Picatinny Scope Mount.  Solid one-piece aluminum alloy scope mount designed for tactical hunting optics. Dual inner ring fit for both 25.4mm (1 inch) and 30mm scope tubes. Multi-sided Picatinny rails on ring bodies offer extra space for laser, flashlight or other attachments. Precision CNC machined with matte black finish, delivers stable zero retention for heavy recoil outdoor use.