Leupold Mark 4 Steel 1 PC Base

Available for virtually every long-range tactical rifle, Mark 4 bases and rings are strong, lightweight, and exceptionally durable.

Mark 4 Tactical Bases are the only bases to accommodate both the oversized 8-40 screw and a 6-48 screw, providing compatibility with the widest range of modern tactical firearms. Both styles of screws are included with each Mark 4 base.

• 8-40 Adaptable (Mark 4)
• Leupold Mark 4 AR-15/M16 Handle Mount
• Leupold Mark 4 CQ/T Flat Top Mounting Bracket
• Mark 4 Base Availablilty (Mark 4)
• Mark 4 Bases Accept (Mark 4)
• Mark 4 CQ/T A.R.M.S. Throw Lever Mount
• Slot and Spline Design (Mark 4)