The problem is, that if she needs it, she has to drop the slide, and that first round had best chamber cleanly and completely. Several variables may preclude this from happening.
If for some reason it does not, she now has a short, expensive, heavy and ineffective club.
If she has trouble racking a slide in a controlled environment...her trying to clear a jam and get a fresh round chambered in close quarters will be a challenge (at best).
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