These sturdy bases are machined from solid steel and feature a cross cut Weaver-Style that handles even the heaviest magnums.
Mounting Hardware Included
This is a Picatinny rail base
If the description lists 20 MOA, the base has an upward tilt machined into it, so that the scope will have 20 minutes of angle elevation over a standard base. This is intended for rifles that will be specifically set up for long-range shooting.