Board Thread:Questions and Answers/@comment-24955097-20140518021700/@comment-6697950-20140518072926

The LN never names the armour used. The only exception being Kirito's coats, because he's Kirito and his coats are trademark symbols of him. Even the anime doesn't name the armour that characters used, unless for some random armour/clothes they equip at some point. Heck, we don't even have the official name for Death Gun's cloak, we're just naming it based on its ability, which does have a name.

For weapons, the Hecate takes up most of her free space. She was only able to somehow squeeze in a light SMG so that she wouldn't be defenceless at close range.