S6 Engineering have released a series of Blast Markers and templates for the Gruntz 15mm rules.
From their announcement:
This weeks releases from S6 Engineering include a blast template for Gruntz incorporating 6″, 4″ 2″ templates as well as a direction randomiser. As the photo shows, users can customize the look of the template by selectively removing the protective backing.
We are also offering a pack of 12 blast/suppression markers, perfect for games such as Stargrunt or Epic which require tracking of units under fire.