- Universal Cross-Slot Design fits Picatinny and Weaver-style rings
- Includes 6-48 and 8-40 Screws which are extra-strength for heavier optics
- Locking screws with Nylok will not back out under recoil or vibration
The Leupold Mark 4 Picatinny-Style Scope Base is ideal for use on your long range rifle. Mark 4 bases feature a 20 MOA slope for long range shooting and are constructed of solid steel. This base will accept either 6-48 base screws or oversized 8-40 base screws (both sizes of screws are included).