New to guns - just got a 23 gen 3. I have a biometric safe where I keep the gun with full magazine inserted, but no round chambered. If I need it: swipe finger, open safe, grab gun, cycle action and good to go. Is this common? I know somebody with a .40 Ruger that insists you need to empty the magazine every month to keep the spring from loosing its effectiveness. Is this true of the Glock? A side question: Is it OK to leave the slide locked open for a long time?