Yes sir, I fed ammunition into two of the three magazines I purchased. Both had the same problem with the magazine pin falling out when slightly depressing after loading the tenth cartridge. I did not think it was a faulty magazine as all three are comparable in build and function, from what I can tell. I will try shooting off a few more mags with these pins securely in place when I have some spare time. If this doesn't solve the problem then I will contact your company directly. It just seems odd that such a trivial component is so unintentionally released and potentially affects the entire operating mechanism. I posted hoping to get some feedback from others with more time and experience with their own rifles.