With a Glock it is. On a Glock the trigger cocks/compresses and then releases the striker as the striker is at a forward position where most other makes its cocked. unless I am misreading your postNOT EXACTLY TRUE! The trigger movement doesn't push and pull the striker. When the slide moves rearward (as in charging) the striker/firing pin is blocked/held in place until the disconnect pushes up to release it. Although the striker/firing pin isn't under spring pressure it does need a slap on the back to fire. Glock (can't state as what others have) has the spring in front of the striker/firing pin so the only way (other than visually checking the chamber) to know if a round is chambered is the extractor position. Some others have (like xdm models) an indicator on top by the hood, hole at the top rear of the hood (s&w) or a hole in the plate at the back of the slide.