I'ts the camo on the shaft.

I can shoot my sons Gold Tips, the solid black ones, and they are silent. My camo arrows made a little noise when drawn. I took some very fine (600 grit) paper and water sanded my shafts. It will remove a little camo but not enough to worry about.

Use caution not to go too deep or in one spot for too long as this might make a weak spot. I did mine and have been shooting hard for about three months with no problems.

They will quiet down on there own in time if you shoot a lot but this just helps it along.

As for the Biscuit, In my opionion, It is the best HUNTING rest out there.