rounds have cartridges similar to 12-gauge shotgun shells at the top of each round that detonates a white flash upon impact instead of sending out shrapnel as a live mortar would. Stryker Cavalry Regiment 2010-01-12T04:03:00-08:00 V2 Gauge|Germany|Military|Mortar|Shotgun shell|United States|United States Army|Vilseck| Comments Labels: Gauge , Germany , Military , Mortar ,