If you decide to replace it do yourself a favor and get a captured spring model like the Lightning Strike model from Brownell's - part no. 642-000-012. The one in my G23 has worked very well for many years. When it comes time to change springs you can still do so with just an Allen wrench. For general use keep a factory weight spring in the gun. There's also the LaserMax guide rod with an internal laser to consider. I have a 1st gen Crimson Trace unit on mine and while I like it, it doesn't work with all holsters.