4 PC Digit Combination Lock With 2 Keys

It’s a nice idea to make this lock, and instead of the TSA bs I can have a key besides combinations. I use it to look the ammo box and transportation of my firearm(s), so one key in my biometric safe and the other on my chain. However, don’t expect this is something like master lock kind of sturdy thing, and I am sure it won’t survive if I shot it with even 22 cal. But the price I paid, it already satisfied me!