I decided to put this in Semi Auto, as I figured the 1911 and XD grip safeties might work differently. How exactly does a grip safety work? I've noticed that you can't manually pull back the slide of an XDm without holding down the grip safety, but that doesn't seem like it would stop the gun from firing, just turn it into a single-shot weapon. Is there something else at work, or can the gun simply not fire without the slide moving? Does the 1911-style grip safety work the same way?