Heirlooms are premium tier cosmetics in Apex Legends and are legend specific.
Bangalore’s Heirloom is called Cold Steel
Raven’s Bite is Bloodhound’s Heirloom in Apex Legends
Death Hammer with the yellow decals is Caustic’s Heirloom
Crypto’s Heirloom is Biwon Blade and is one of the simpler looking Heirlooms in Apex Legends
War Club is Gibraltar’s Heirloom
Lifeline has Shock Sticks as her Heirloom set
The latest Heirloom to be released is Loba’s Garra de Alanza