[Ak49guns]

I know this has been topic before but I can't seem to find it and I'm in the market for 5.7 but I'm hearing it's useless compared to 9mm or 45

 

[Dizzy82]

https://en.wikipedia.org/wiki/5.7x28mm

 

[Buffman]

been beaten to death. It shines in armor penetration, and capacity and weight. I would say it's every bit as good as all common service calibers.