The M133 can hold up to 2000 rounds of BBs and is powered by two 11.1v batteries. The cannon also has two firing speeds a fast speed that fires at 3000 rpm and a slow speed that fires at 1500 rpm. You can vary the spread of the M133 by adjusting the hop-up on each barrel separately. Each barrel also features a quick-change spring, which enables you to alter the gun’s power in accordance with the constraints of your field of play.