High Quality Content by WIKIPEDIA articles! Submachine gun and belt-fed machine gun shooting competitions take place across the United States every month in many states where firearms which fall under the National Firearms Act are legal. Although submachine gun competitions have been happening in the United States of America since the early 1980s, it is one of the least-known shooting disciplines due to the restricted nature of the firearms involved. To the novice submachine gun competitor, the average match would have many of the same elements as a IDPA or IPSC event with the only difference being the firearm used and the amounts of ammunition carried. Usually competitors move through a stage while being timed as he or she navigates the course of fire (COF) and shoots the various target types.