>>314785805>>314785943Hand gun is up in the air.
WAY late-game, you get exclusive upgrades for each gun. Red9 & Blacktail get damage buffs, Handgun gets a 40-50% crit chance (crit headshots cause OHKs & prevent a certain unpleasant side effect of doing that), Punisher penetrates through 5 people.
Shotgun is probably outmoded by the Riotgun, but only mild-moderately, and the riotgun is one of the most expensive weapons to upgrade. Eventually you'll get access to the Striker, which is a high-damage low-range high-capacity SG that fires from the hip. It's not as satisfying as the other two, but some
faggots swear by it.
Rifle you WILL upgrade, unless you just want it so you have something with a scope. The semi-auto version has higher damage (until the exclusives), higher ROF, a larger mag, faster reload, and only takes up ~40% more space. (9x1 vs 7x2)
TMP is a safe bet to upgrade, and its exclusive turns it into a monster, doubling its damage.