Ammo Mods are used to add Nano effects to Weapons. Rounds will be positively and negatively affected based on conditions described below. A number of variations of these Mods were introduced at Events. They have the same effect but produce visual effects.

Corrosive Explosive Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Rocket Launchers and Detonators. Mod Effect: Armor Damage. Nano Effect: Corrosive.
Electrical Explosive Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Shield Damage. Nano Effect: Electrical.
Incendiary Explosive Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Rocket Launchers and Detonators. Mod Effect: Health Damage. Nano Effect: Incendiary.
Piercing Explosive Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Armor Penetration. Nano Effect: Piercing.
Quantum Explosive Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Shield Penetration. Nano Effect: Quantum.
Corrosive High-Caliber Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Armor Damage. Nano Effect: Corrosive.
Electrical High-Caliber Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Shield Damage. Nano Effect: Electrical.
Incendiary High-Caliber Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Health Damage. Nano Effect: Incendiary.
Piercing High-Caliber Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Armor Penetration. Nano Effect: Piercing.
Quantum High-Caliber Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Shield Penetration. Nano Effect: Quantum.
Corrosive Mid-Caliber Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Armor Damage. Nano Effect: Corrosive.
Electrical Mid-Caliber Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Shield Damage. Nano Effect: Electrical.
Incendiary Mid-Caliber Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Health Damage. Nano Effect: Incendiary.
Piercing Mid-Caliber Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Armor Penetration. Nano Effect: Piercing.
Quantum Mid-Caliber Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Shield Penetration. Nano Effect: Quantum.
Corrosive Shell Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Armor Damage. Nano Effect: Corrosive.
Electrical Shell Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Shield Damage. Nano Effect: Electrical.
Incendiary Shell Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Health Damage. Nano Effect: Incendiary.
Piercing Shell Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Armor Penetration. Nano Effect: Piercing.
Quantum Shell Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Shield Penetration. Nano Effect: Quantum.

Event Mods

These Mods were available at the following Events:

Tinsel Corrosive Explosive Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Rocket Launchers and Detonators. Mod Effect: Armor Damage. Nano Effect: Corrosive. (Note: Show blast effect)
Tinsel Electrical Explosive Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Shield Damage. Nano Effect: Electrical. (Note: Show blast effect)
Tinsel Incendiary Explosive Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Rocket Launchers and Detonators. Mod Effect: Health Damage. Nano Effect: Incendiary. (Note: Show blast effect)
Tinsel Piercing Explosive Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Armor Penetration. Nano Effect: Piercing. (Note: Show blast effect)
Tinsel Quantum Explosive Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Shield Penetration. Nano Effect: Quantum. (Note: Show blast effect)
Frosty Corrosive Explosive Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Rocket Launchers and Detonators. Mod Effect: Armor Damage. Nano Effect: Corrosive. (Note: Holiday Cheer)
Frosty Electrical Explosive Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Shield Damage. Nano Effect: Electrical. (Note: Holiday Cheer)
Frosty Incendiary Explosive Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Rocket Launchers and Detonators. Mod Effect: Health Damage. Nano Effect: Incendiary. (Note: Holiday Cheer)
Frosty Piercing Explosive Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Armor Penetration. Nano Effect: Piercing. (Note: Holiday Cheer)
Frosty Quantum Explosive Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Rocket Launchers and Detonators. Mod Effect: Shield Penetration. Nano Effect: Quantum. (Note: Holiday Cheer)
Tinsel Corrosive High-Caliber Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Armor Damage. Nano Effect: Corrosive. (Note: Show blast effect)
Tinsel Electrical High-Caliber Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Shield Damage. Nano Effect: Electrical. (Note: Show blast effect)
Tinsel Incendiary High-Caliber Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Health Damage. Nano Effect: Incendiary. (Note: Show blast effect)
Tinsel Piercing High-Caliber Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Armor Penetration. Nano Effect: Piercing. (Note: Show blast effect)
Tinsel Quantum High-Caliber Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Shield Penetration. Nano Effect: Quantum. (Note: Show blast effect)
Frosty Corrosive High-Caliber Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Armor Damage. Nano Effect: Corrosive. (Note: Holiday Cheer)
Frosty Electrical High-Caliber Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Shield Damage. Nano Effect: Electrical. (Note: Holiday Cheer)
Frosty Incendiary High-Caliber Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Health Damage. Nano Effect: Incendiary. (Note: Holiday Cheer)
Frosty Piercing High-Caliber Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Armor Penetration. Nano Effect: Piercing. (Note: Holiday Cheer)
Frosty Quantum High-Caliber Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Bolt-Action Sniper Rifles, Semi-Auto Sniper Rifles, and Pistols. Mod Effect: Shield Penetration. Nano Effect: Quantum. (Note: Holiday Cheer)
Tinsel Corrosive Mid-Caliber Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Armor Damage. Nano Effect: Corrosive. (Note: Show blast effect)
Tinsel Electrical Mid-Caliber Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Shield Damage. Nano Effect: Electrical. (Note: Show blast effect)
Tinsel Incendiary Mid-Caliber Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Health Damage. Nano Effect: Incendiary. (Note: Show blast effect)
Tinsel Piercing Mid-Caliber Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Armor Penetration. Nano Effect: Piercing. (Note: Show blast effect)
Tinsel Quantum Mid-Caliber Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Shield Penetration. Nano Effect: Quantum. (Note: Show blast effect)
Frosty Corrosive Mid-Caliber Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Armor Damage. Nano Effect: Corrosive. (Note: Holiday Cheer)
Frosty Electrical Mid-Caliber Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Shield Damage. Nano Effect: Electrical. (Note: Holiday Cheer)
Frosty Incendiary Mid-Caliber Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Health Damage. Nano Effect: Incendiary. (Note: Holiday Cheer)
Frosty Piercing Mid-Caliber Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Armor Penetration. Nano Effect: Piercing. (Note: Holiday Cheer)
Frosty Quantum Mid-Caliber Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Assault Rifles, SMGs, and LMGs. Mod Effect: Shield Penetration. Nano Effect: Quantum. (Note: Holiday Cheer)
Tinsel Corrosive Shell Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Armor Damage. Nano Effect: Corrosive. (Note: Show blast effect)
Tinsel Electrical Shell Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Shield Damage. Nano Effect: Electrical. (Note: Show blast effect)
Tinsel Incendiary Shell Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Health Damage. Nano Effect: Incendiary. (Note: Show blast effect)
Tinsel Piercing Shell Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Armor Penetration. Nano Effect: Piercing. (Note: Show blast effect)
Tinsel Quantum Shell Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Shield Penetration. Nano Effect: Quantum. (Note: Show blast effect)
Frosty Corrosive Shell Ammo
Corrosive Rounds turn Armor into butter, dealing bonus damage against targets with active armor. Shields and Health are resistant to the chemical composition, making them less effective. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Armor Damage. Nano Effect: Corrosive. (Note: Holiday Cheer)
Frosty Electrical Shell Ammo
Ion rounds scramble energy fields dealing bonus Shield damage, but are smaller caliber than other ammunition making them less effective against Armor and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Shield Damage. Nano Effect: Electrical. (Note: Holiday Cheer)
Frosty Incendiary Shell Ammo
Incendiary rounds melt unprotected flesh, dealing bonus Health damage. Shields and Armor dampen the heat causing them to be less effective while active. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Health Damage. Nano Effect: Incendiary. (Note: Holiday Cheer)
Frosty Piercing Shell Ammo
Piercing rounds drill through tough Armor to deal a portion of their damage directly to Health. "Drillers" deal less direct damage to Armor, Shield and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Armor Penetration. Nano Effect: Piercing. (Note: Holiday Cheer)
Frosty Quantum Shell Ammo
Quantum rounds are capable of phasing a portion of their payload directly through Shields, dealing a portion of their damage directly to Health. The phasic matter within lacks the density of normal matter and deals less direct damage to Shields, Armor and Health. Attachable to Combat Shotguns, Pump Shotguns, and Sawed-Off Shotguns. Mod Effect: Shield Penetration. Nano Effect: Quantum. (Note: Holiday Cheer)