In 1994, the U.S. government banned manufacture and importation of pistol magazines with more than a 10-round capacity. These were the so-called "high-capacity" magazines, which again became legal to manufacture and import in most states in September 2004, after the relevant federal law expired. This change in federal law rendered many staggered-magazine pistol models (commonly with magazine capacities of 15 or more rounds) less popular in the American market. They were now overly large in light of their newly mandated 10-shot limit. Kahr was at the forefront, offering relatively small, well-made pistols with magazine capacities of up to eight rounds of 9mm or .40-caliber ammunition. These single-stack magazines allow for slender, compact pistols that have proven popular with the buying public.