That .22 Pistol at the end...
Really? Penetrates and kills 2 people? Give me a fucking break. I nearly burst out laughing or saying out loud, "BULLSHIT!" in the theater when everyone was so quiet watching that scene. .22 is not even a combat cartridge. It's useful in other scenarios but not in a 1 shot scenario such as this in the movie. The .45 ACP on the other hand, different story.
https://thegunzone.com/wp-content/uploads/2017/09/Common-Bullet-Sizes.jpg
https://www.pewpewtactical.com/wp-content/uploads/2019/09/Popular-Pistol-Calibers-Labeled.jpg
https://lh5.googleusercontent.com/Wo1MWJPxZU-z6S3MVEe8OtR5bUaz_0oN1EVoZfm37lcXJcyFeWhPQPzrb5cCwj0khBJHKy2GUSOBaw56SylmWM3Pmd8P0z7kzTT5VdV57TxNXOeORVC7_aeBriyABI0otkPi-og=s0