I believe you're thinking of the Voskhod 2 mission. They landed in deep snow in the Urals and had to camp the night out in their spacecraft until the rescue party could reach them the next day.

Alexei Leonov's 1st-person account can be read here: http://tinyurl.com/voskhod2 (taken from the book "Two Sides of the Moon", co-authored with Apollo 15's Dave Scott)

I'd tend to agree with my above sibling that bringing guns in a spaceship sounds like the opposite of safe, but according to Leonov they had a pistol, and "plenty of ammunition".