My order arrived today. I inspected the rifle then took it out into a field to shoot off a few rounds. While loading the magazine, I unintentionally attempted to push an eleventh cartridge into the second magazine. I felt something roll off my pinky finger as the last cartridge was inserted. Upon further investigation, I realized a pin had fallen out by comparing the two magazines. I wasn't sure if it was a necessary component or just something added for shipping purposes. It took me quite awhile to locate such a small piece in the prairie as the sun was setting.
Anyway, I'm wondering what is this pin for? It can easily be lost and being such a cheap, little piece it doesn't seem very reliable or easily replaced. On another note, I experienced several failure to fire and failure to feed. This occured a few times and always on the last round. I will try again this weekend when I have more time to spare.
Any help or advice would be greatly appreciated. Thanks.
Edit: I forgot to mention that the magazine mostly wouldn't release and had to be pulled on to be removed. Removing the magazine caused the charging handle to spring forward automatically. From what I have seen in videos and read online, this should not happen. Could one little pin on the magazine really affect the entire operation of the rifle THAT much?