The extended heavy magazine is an attachment for weapons that take heavy ammunition for Apex Legends. Like the other magazine types, Heavy mags are divided into four rarities: Common, Rare, Epic and Legendary (also referred to as Level 1, Level 2, Level 3 and Level 4 respectively). The greater the level, the greater amount of rounds that can be stored (except at Level 4, which carries the same amount of extra rounds as a Level 3 magazine, but gives the autoloader perk which allows your weapon to reload after 7 seconds if holstered).
Weapons that can equip the extended heavy magazine include any weapon that uses Heavy Rounds.
| Weapon | Magazine Level | |||
|---|---|---|---|---|
| Level 1 | Level 2 | Level 3 | ||
| VK-47 Flatline | 25 | 28 | 30 | |
| Prowler Burst PDW | 25 | 30 | 35 | |
| 30-30 Repeater | 8 | 10 | 12 | |
| Hemlok BF-R | 24 | 27 | 30 | |