We announce new things on the first page but will go into more detail here.
We have recently added a new 37mm round that we call "Concussion". It explodes with a very loud bang but has no visual component, only a puff of smoke when it explodes. We developed this in conjunction with one of our ammo manufacturers for enhanced animal control. Also, some reenactors wanted something "less showy". If you pick a few rounds up, post your thoughts here.
I think that this video snippet shows the "display" component well.