Things I liked: They work well with my P-90 and a mock suppressor tracer unit. They look wild going down range in a darkened room or after dark.
Things I would have changed: Nothing
What others should know: They did not seem to work well with a magazine style tracer unit. That may be because the tracer magazine I used did not work well in my Tavor, See my review on the tracer magazine, I think it was a gun issue not the tracer ammo.