For close-quarters combat, SMGs and Shotguns are king:

- Aggressive SMG (e.g., ASM1):
- Attachments: Laser Sight, Extended Mags, Stock.
- Exo Ability: Exo Stim or Exo Cloak.
- Perks: Lightweight, Gung-Ho, Overcharge.
- Wildcard: Primary Gunfighter.
Maximizes hip-fire accuracy and mobility, allowing you to rush enemies and win close-range gunfights. Overcharge helps with faster ability cooldowns.
- Room Clearer Shotgun (e.g., KF5):
- Attachments: Laser Sight, Advanced Rifling, Extended Mags.
- Exo Ability: Exo Shield or Exo Stim.
- Perks: Flak Jacket, Toughness, Hard Wired.
- Wildcard: Primary Gunfighter.
This build focuses on maximizing the shotgun's effective range and pellet spread, making it devastating in tight spaces. Flak Jacket protects against enemy explosives.
SMGs like the MP11 and SN6 also offer great close-range potential. For shotguns, consider the S-12 for its semi-automatic fire rate. Always aim for the center mass with shotguns for maximum damage.