Many USPSA clubs have been running carbines for years as an unrecognized division.
In reality, the NRA should ask you the same question.
The NRA America’s Rifle Challenge program has recently made waves with over 630 participants in 18 recreational training events organized since the program launched earlier this year and more to come, according to NRA training specialist Nathan Judd. No experience is required for participants, as the program is designed for shooters of all skill levels.
NRA action pistol draws them together not just as father and son, or coach and pupil, but as teammates, comrades, friends.