Questionable Crystal Purchases

I love this game and have spent a ton of time making my ship the strongest I can, adding 16 tomahawk missiles and much more. Than I come across the "Mounted AN/SPG-62". It says that it will increase the accuracy of the missiles but I want to see them in action before I waste 5 dollars on a free game. Thanks!

Zezop about Warship Craft, v2.1.15