I find it annoying to see those flying bullets in M2 (sometimes they go waaaay to slow. Do you know how to make them invisible? Or which texture are they?

Do make them invisible you must delete the bullet images. They can find you while extract  sds/particles the particles.sds Name of the texures are MIP_particles_nonalpha_01.dds and particles_nonalpha_01.dds. You can open it with Paint.NET