The Gun Bullet Launcher Theme is designed to decorate your Android phone with Gun HD wallpaper and customized icons. 

The theme includes HD Gun wallpapers, custom icon packs, and themes. It will work on all Android devices, but you will have to download it separately for your device.

If you want to apply it for your phone, you need to download it from Google Play. It's very easy to install and apply the theme. All you need to do is to download it, install it, and apply it. It's not a lot of steps, and you will get a nice design on your phone.