M4 Tritium Night Sight Inserts for Ghost Ring Sights. Designed to fit M4 shotguns manufactured after 1997, these Tritium three-dot inserts can be easily installed into the military spec ghost-ring sight. When the lights go out, you'll have the advantage with these ghost-ring tritium inserts.
- Tritium Night Sight Inserts
- M4 Ghost Ring Sights (Manufactured After 1997)