I seem to have trouble finding them. I ordered a 3 10 round mags with grey followers and I went down to the range. I didn't notice that one of them was a 10 round mag with an orange follower (bonus I suppose). Only, I went to load 10 rounds in the mag and it stopped at 5. So I popped the bottom off and noticed the spring was just a big coil with the expanded portion of the spring coincidentally elastic enough to handle 5 rounds. So now, I need to find some springs. Any idea where to get springs?