There goes Shooterike, frothing at the mouth again. You really need to go to the hospital to be checked for rabies. You are ignoring, no surprise there, the entire range of 5.56mm light machine guns which go cyclic at about 800-1,200 rpm. So, kudos on once again opening your mouth and proving your ignorance 450rpm for the M240B? Manual rates are sustained, 100 Rounds per minute fired in 6 to 9 round bursts and 4 to 5 seconds between bursts. Barrel change every 10 minutes. Rapid fire, 200 Rounds per minute fired in 10 to 13 round bursts and 2 to 3 seconds between bursts. Barrel change every 2 minutes. Cyclic, 650 to 950 Rounds per minute fired in continuous bursts. Barrel change every minute. The M240G also has an upper limit of 950 rounds per minute.