Overview
- The M111 uses blast overpressure to neutralize threats in enclosed spaces, addressing fratricide risks seen with fragmentation grenades in urban fighting.
- It replaces the obsolete Mk3A2 series restricted for its asbestos body, adopting a plastic casing that is consumed on detonation.
- Army officials say the M111 complements the M67, with M111 prioritized for confined terrain and the M67 retained for open areas.
- The M111 and its M112 training variant share the same fuzes and five‑step arming process as the M67/M69, streamlining training and procurement.
- Developed at Picatinny Arsenal by CPE A&E and DEVCOM, the program retains government‑owned IP to enable competitive production across the industrial base.