I love my G30. Only improvement I can think of is a front rail. Guess I could sell it for 1/2 and buy a new one. However, there's another possibility: Looking at the front frame profiles of the rail and non rail GLOCKs, they appear to be the same. So, why not set up a milling machine and cut rail grooves? I know it would void the warranty. Are there any other problems. Has anybody done this?