I've had my CW9 for about a dozen years or so, and have put a lot of rounds through it. Recently, when I slam in a fresh magazine, the slide sometimes releases by itself. Not all the time, but maybe once out of every 7-8 magazine changes. If I push the magazine in slowly then it does not do this.

So, any ideas on what might be causing this? Do I need to replace a spring somewhere? It's not really a huge problem -- I mean, it's not like the gun fires itself -- but it is always a bit of a surprise, and of course it's not really supposed to do that.