While some Attachments are available from the beginning of the game, most will need to be unlocked through completing specific Challenges. All Attachments are usable by both the Security and the Resistance and there is no restriction on equipping them other than only allowing one for each slot.
Top Attachments alter the sighting for Weapons, providing an enhanced view when aiming. Usually they offer an exposed aiming point in exchange for a slower equip speed.
|Adjusted Iron Sights||Remove Peripheral Zoom||None|
|COGA Scope||Increased Zoom||Decreased Equip Speed|
|Snoop-R Scope||Increased Zoom||Decreased Equip Speed|
|Greeneye Scope||Increased Zoom||Decreased Equip Speed|
|D-Flex Red Dot Sight||Exposed Aiming Point||Decreased Equip Speed|
|C-U-Gone Red Dot Sight||Exposed Aiming Point||Decreased Equip Speed|
|YeoTek Red Dot Sight||Exposed Aiming Point||Decreased Equip Speed|
Front Attachments alter firing behaviour, generally making it easier and safer to fire. Usually they offer increased stability in exchange for lower range.
|Silencer||Hides Firing Location||Decreased Damage|
|Muzzle Brakes||Increased Stability||Decreased Range|
Magazine Attachments alter reloading behaviour, generally making reloading less risky or frequent. Usually they offer increased magazine capacity in exchange for a lower accuracy and decreased equip and reload speeds.
|High-Capacity Magazine||Increased Magazine Capacity||Decreased Accuracy, Equip & Reload Speed|
|Duct-Taped Magazine||Increased Reload Speed||Decreased Accuracy & Equip Speed|
|Drum Magazine||Increased Magazine Capacity||Decreased Accuracy, Equip & Reload Speed|
|Rapid Fire||Increased Fire Rate||Decreased Stability|
Bottom Attachments alter miscellaneous statistics, with some adding new functionality. Usually they cause a slower equip speed, but can improve the weapon in various ways.
|Speed Sling||Increased Equip Speed||Decreased Stability|
|Speed Holster||Increased Equip Speed||Decreased Stability|
|Underslung Grenade Launcher||Contact-Detonated Grenades||Decreased Accuracy & Equip Speed|
|Front Grip||Increased Stability||Decreased Equip Speed|
|Bayonet||Knife Melee Strike||Decreased Equip Speed and stability|
|Weapon Shield||Added Protection||Decreased Equip Speed|