To be honest, you don't need it firing M4s. It's an easy gun as long as you practice the same consistent mechanics and working on your set up, breathing and avoiding a "jerking" on the trigger pull. I told her to take as much time on the zero range and to not let them pull you out until she felt comfortable with her shot group. She actually had the same qual score as one of the male Rugby players who has fired hundreds of rounds downrange with an AR-15 and are family friends of ours. The dad was convinced his son (who will be an Infantry Ranger type for sure) would hit a lot more than my daughter but she is an athlete too who has been hitting softballs being thrown to her at 62-68mph. She has 3.5 years to work on getting more comfortable and learning how the M4 Qual range operates. They also have an indoor firing range/simulator on campus/post that is available to them just about anytime so she will get plenty of trigger time.