Description

This is ONE single screw, buy as many as you need (only 3 are needed on a Mark Receiver)
These use 3/32″ Allen Driver.

The “Reversible” picatinny rail used on the LITE from the factory uses a shorter screw than the standard old style Weaver rails.
The old style screw will hit the bolt if used with the reversible rail.
This is the screw that ships with the rail that come on the LITE pistols.
Mark 3 and Mark 4 LITE are the same rail and screws.
These rails and screws can be used on any Ruger Mark Receiver.