Getting used to the balance can take a little time. With the action and mag located behind the grip, the weight shifts toward the back, which might feel a bit strange at first. And when it comes to reloading, it’s not as quick or intuitive as what you might be used to with more traditional setups especially in a stressful situation. And let’s not forget that some models can have triggers that feel really stiff or just don’t sit right in your hand, depending on the brand. It takes some getting accustomed to for sure.