At the full end of each episode, you can choose one upgrade to get - either in guns, driving or fighting. These are the sequence of guns you can earn. For each upgrade you don't just "get" it - you must "earn" it by doing a course. These pistols become your new default weapon.

1) .40 revolvers 8 bullet capacity 4 shots per second
2) .50 pistols

True Crime - Streets of LA Walkthrough


True Crime - Streets of LA Review