I enjoyed it, filled my time between episodes of other shows.
Like a gun version of K-On, but better because of less tea and cake.
More similar to Girls and Panzer I guess. Yeah thats a better comparison.
I rated 3 stars, but out of a 10 rating system it would get 6. 2 stars is to low, and 4 is to high, 3 not quite there, so a 6/10 would be a better estimate of my opinion of the show.