Here are the top 10 military traditions that need a lot of explaining to your civilian family members.
M26 Shotgun Featured on Triggers
The M26 Modular Accessory Shotgun System (MASS) is a developmental under-barrel shotgun attachment for the M16/M4 family of United States military firearms. It can also be fitted with a pistol grip and collapsible buttstock to act as a stand-alone weapon. It is replacing the current M500 shotguns in service. http://en.wikipedia.org/wiki/M26_Modular_Accessory_Shotgun_System