Machine Gun (MG) perk does not show if you click 'Details'. Warning, do not switch to other perks on a class item, because MG perk disappears.
Hello Neo_Smith_PhD. Bungie is aware of an issue in which the Machine Gun Reserves perk is no longer available on certain gear (including class items). They are working on a fix for the issue. From [b][url=https://www.bungie.net/en/Forums/Post/252323677?sort=0&page=0][BUNGIE] Season of Opulence Known Issues and Vital Info[/url][/b]: [quote]• [b]Machine Gun Reserves Perk:[/b] We're investigating an issue the Machine Gun Reserves perk is no longer available on certain gear.[/quote]