Is the BR a 4sk or 5sk?

Pardon the simplicity of my comment, but I’m a little confused. I thought the BR was a four shot kill, but I’ve read in places that it’s a five shot kill like the DMR. Would someone be able to clarify how many shots are necessary for a BR and DMR kill?

Thanks!

Five bursts from the Battle Rifle, the final blow must by a headshot to kill them.

The DMR is a five shot kill, the fifth bullet must be a headshot also.

Both are a 5SK if I’m correct.

In theory doesn’t that mean that the Light Rifle will be a 5sk just with less acuracy when fired from the hip?

Thanks for clearing this up for me people!