Colliders don't work

Usually bullets fly through them, how to fix it?

This is not easy to answer, I asume your bullet speed is too high. Continous detection, rigidbody settings and collider types are other weak spots:

http://forum.unity3d.com/threads/184158-About-collisions-failing-on-high-speed

var shoot = Instantiate(Bullet,gameObject.Find(“bulletspawns”).transform.position,Quaternion.identity); shoot.rigidBody.AddForce(transform.forward * Speed);

I think this will work out? If still doesnt works try to make a new bullet script. Hope this helps!

Sometimes this is unity glitches or bug’s i believe.Try to restart unity or decrease the force of your bullet.

Hope this help’s.