IDPA To Preview National Championship Stages Starting Saturday – Next week’s International Defensive Pistol Association (IDPA) National Championships will bring together over 350 of the sport’s top competitors, all gunning for the coveted title of National Champion in one of its five divisions and 11 categories.  As the country’s fastest growing shooting sport, fueled by the increased demand in concealed carry permits and the need for personal protection, entry into the match is one of the most difficult, especially considering IDPA’s membership exceeds 20,000 and represents more than 50 nations.