2mm Electromagnetic Cartridge (Fallout 4)

The 2mm electromagnetic cartridge is a type of ammunition $$

Gameplay
Much like in Fallout 2, 2mm EC rounds are used by the powerful Gauss rifle. These rounds are rare and expensive, and also take the most resources to craft.

Weapons using this ammunition

 * Gauss rifle
 * The Last Minute
 * Prototype Gauss rifle

Locations

 * One cartridge can be found on a tray on a counter in the stowage depot of the Prydwen. This is the only placed instance of a 2mm EC cartridge in the game.
 * 2mm EC ammo may also be found in rare loot from level 22 onwards, or found along with randomly spawned Gauss rifles.
 * These vendors sell approximately 20-55 of the rare 2mm EC ammo type, refreshing their stock every 48 hours. The ammo does not become available from vendors until level 28 (or possibly level 22 in some cases), increasing in quantity at levels 30 and 35.
 * {| class="ace-table ace-table-center" width=50%

! style="width:50%"|Vendor name ! style="width:50%"|Vendor location (Traveling merchant) (after completing Old Guns)
 * Arturo Rodriguez
 * Diamond City market
 * Myrna
 * Diamond City market
 * Percy
 * Diamond City market
 * Daisy
 * Goodneighbor
 * KL-E-0
 * Goodneighbor
 * Rufus Rubins
 * Goodneighbor
 * Proctor Teagan
 * The Prydwen
 * Tinker Tom
 * Railroad HQ
 * Cricket
 * Boston
 * Proctor Teagan
 * The Prydwen
 * Tinker Tom
 * Railroad HQ
 * Cricket
 * Boston
 * Cricket
 * Boston
 * Boston
 * Ronnie Shaw
 * The Castle
 * The Castle
 * }