having 2 or 3 of the same gun is actually a really good idea. You have one that you carrry but don't usually shoot so it doesn't get worn out. You have one that you take to the range and train with so that's the one that breaks instead of the one you may have to fight with, then finally a backup for the others to eliminate down-time if something happens.
If you use good JHP ammo than the .40 doesn't offer very much over the 9mm.
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I don't collect guns, I accumulate them.
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