NIB being new this year or 20 years ago?
I own (2) 5906's and they will eat any ammo and are super tough/ hard to make "not work". I also have several 3rd gen's in 9mm 45 and 10mm that never have any issues. So I would check for something being wrong with that gun. It should work just fine out of the box all day long with any ammo.

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