Board Thread:Off Topic/@comment-29684190-20191110024409/@comment-25396609-20191201224547

While a paper controlling Semblance is fine, that does not make a book gun a viable weapon.

Like I said, the issue is how small a caliber it would need to be to fit in the spine of a book. The original design of Stormflower demonstrated that particularly small caliber arms are pretty ineffective; and this would need to be even smaller.

On top of that, your sight is so far offset (vertically and horizontally) that it is effectively useless; making the weapon excessively difficult to aim.

With a paper-controlling Semblance you'd be infinitely better off using it to make origami weapons; replacing the (severely ill-conceived) book gun with an ordinary book containing large sheets of folded paper that can easily tear loose.