My Lego HK UMP 45

After a couple weeks of working, I finished my Lego gun. It works and it is amazing. I started out when I saw other people's Lego gun. On their videos on YouTube, they showed the mechanism. I saw how it worked and realized it wasn't very hard. I tried making my own. I started out with a magazine that I ended up improving 3 times. I made the gun and tried to make as accurate as possible. It has mostly what it needs. I made a trigger and a reloading system. :)