Colonizing a new planet is not for the weak. In most instances it means long years of toil on the frontier of an untamed world. Sometimes colonists face aggressive native species; sometime the danger comes from age old clashes brought within the human community. New colony worlds can also become the target for roving space pirates intent on raiding small colonies for valuable plunder. The need for basic defense is common.
Often the struggling settlements possess only low-tech small arms because of the cost of importing and maintaining higher-tech weapons. In times of trouble, this group of colonists carries an assortment of slug throwers from handguns to shotguns.