Is there anything similar to the SIMON breach grenade?
Question above. the [SIMON breach grenade](https://en.wikipedia.org/wiki/SIMON_breach_grenade) slides over the muzzle of an M4/M16 and is propelled up to 30m by a regular ball 5.56 round to explode against a door and breach it.
Has there ever been any other rifle grenades that use a "live" round (not a typical blank round) as propellant?