Bases are no place to skimp if you’re making an investment in top-notch tactical optics. Mark 4 tactical bases and rings are the strongest of all Leupold mounting systems. Both 6-48 shoulder screws and the larger 8-40 screws are included to accommodate high recoil applications. Strong 1/2″ keeper nuts lock the rings solidly against the one or two-piece bases, or any Picatiny-style rail.
- Proven design solidifies the sighting system
- Extremely dependable platform