The best way to test firearms in Minecraft!
This world contains a shooting range going from point blank to 50 meters of distance between you and moving targets and "hostage targets"(you should avoid shooting them), and a "breach and clear" section with tripwires that force you to restart, targets that you have to shoot once, but not twice, and a button that completes the breach/clear sequence.
With both of those features, this is the BEST firearms testing facility for any mod!