That's ok. If you need to make a contact shot, putting your thumb, or off hand behind the slide to hold it closed will prevent it from being bumped out of battery by muzzle contact. Not something that you would need very often, but something that could be really important if you end up wrestling with someone. I've had it happen once that I can recall. Looked down at the gun and it was partially out of battery. I chopped the back of the slide with the edge of my hand, it went into battery, and I was back in business. Not something you could do with an external hammer gun and quicker than a TRB in that case. Again, not something that you would need to do a lot, but something that could come in handy once in awhile. By the way, in case it's not immediately obvious, and perhaps it's not, my preference for a striker/internal hammer gun vs an external hammer isn't overwhelming. I thought the somewhat esoteric reasons and/or minor impacts I provided as rationale would make that clear. Well, at least for the reasons I prefer a striker, that would be true as long as they are truly hidden hammer guns (like the M&P Shield EZ or the old 1903) and not external hammer guns with a bobbed hammer like the LCP and the other DAO guns with an external hammer & hammer channel channel but with a hammer that doesn't come out of the channel except when the trigger is pulled. The DAO guns with hammer channels but that still have a hammer that comes back out of the channel when the trigger is pulled would satisfy one of my three reasons, but not the other two. Other people might have different reasons that might relate specifically to whether the gun has a hammer or striker.