When it comes to attachements in Apex Legends there are 4 different levels to them, level 1 (white/grey)
being the worst and level 4 (gold) being the best. Not all attachements will have a level 4 variation.
Attachment
Description
Barrel Stabilizer
The barrel stabilizer can be found in Common, Rare, and Epic rarities.
Reduces the overall recoil of the weapon it's equiped to.
Shotgun Bolt
The shotgun bolt can be found in Common, Rare, and Epic rarities.
Increases the rate of fire for shotguns.
Extended Light Mag
The extended light mag can be found in Common, Rare, Epic and Legendary
rarities.
Increases the ammo capacity and reload speed.
Extended Energy Mag
The extended energy mag can be found in Common, Rare, Epic and Legendary
rarities.
Increases the ammo capacity and reload speed.
Extended Heavy Mag
The extended heavy mag can be found in Common, Rare, Epic and Legendary
rarities.
Increases the ammo capacity and reload speed.
Extended Sniper Mag
The extended sniper mag can be found in Common, Rare, Epic and Legendary
rarities.
Increases the ammo capacity and reload speed.
Standard Stock
The standard stock is a weapon attachment that can be found in Common, Rare,
and Epic rarities.
Improves weapon handling and reduces aim drift.
Sniper Stock
The sniper stock is a weapon attachment that can be found in Common, Rare, and
Epic rarities.
Improves weapon handling and reduces aim drift.