Talk:Akashi's Improvement Arsenal/@comment-25962175-20150418082203

Currently the gun with the most firepower you can give to a DD is a 12.7cm Type B with 9 stars for +6 Firepower.

However, both 12.7cm Type B with 4 stars and a normal 12.7cm with 9 stars will give you +5 firepower at a much lower investment cost.

With the daily quest, upgrading normal 12.7cms doesn't cost any screws so that's something to consider before you start farming for Type Bs.