dupe glitch?

[fwah man]

so today between 7:20P and 7:30P, i opened an item crate and the map changed right before the item crate dropped a gun. when i loaded into the next map, i was dropped the same gun twice. im not sure if this is reproducible or not, but i doubt that an item crate is supposed to drop the same gun with the same stats twice in one drop.
screenshots link: http://imgur.com/a/6fNRG
screenshots also attached