The National Silhouette Association of Ireland runs all classification and national shoots under NRA rules with a modification to the rule 14.4 on what counts as a hit or miss.  See NSAI Adopted Changes March 2009

The National Silhouette Association of Ireland is also affiliated to the International Metallic Silhouette Shooting Union IMSSU the governing body for the World Championships and the AETSM the governing body for the European Championships and compete under IMSSU rules when at these events.