arcane slot not showing up, help

Arcane slot for non-zawkitgun weapons? warframe how to unlock weapon arcane slot To get one of these Melee Arcanes on your weapon, you'll want to get a Melee Arcane Adapter This can either be earned through those Netracell warframe slot bundle Learn all about the Exilus Weapon Adapter Become Madness: SubscribeWMadness

warframe complete starter slot bundle I have steel path, and have used the adaptors before, but there is no slot on any of my melee weapons