Board Thread:Speculation House/@comment-97.95.183.188-20151028155331/@comment-26397825-20151219063122

The 'Carbine' mode that you are speaking of is actually just the weapon not fully unfolded. The large square around the barrel is the scythe head in it's storage mode, and it still uses a sniper barrel and ammunition. She's just capable of using it similar to a shotgun if she doesn't extand the barrel or scythe head fully.