It does.

[Garrus taps the hilt of a pistol hanging from his waist with a clawed finger, the thulium laced carapace sounding off a muffled clack.]

See this? This is a tool that can be used for a bunch of different things. You can use it to defend someone--yourself included--or to cause some serious, uncalled for damage.

Learning how to use it doesn't just come at a whim. There's always a reason behind it. Always.