Just watched the airsoft camMan video on this where the gun malfunctions and fires continuously and potentially blows a mosfet (something smelled burny and it wasn't the battery). In the comments nov explained the issue and said he rectified the problem on all guns, which is good, but it's not so good that was missed in product testing. I suppose a version 1 of anything is a bit of a risk as there's no substitute for testing in the real world rather than a lab.