I just finished putting in a new spring and some other internals into my MP5. Everything went together smoothly. Now my question is when I fire the gun the first 3 or 4 bbs just pop out the end of the barrel and land 10-15 feet in front of me. The rest of the bbs shoot fine. When doing the upgrade I left the barrel and the hop-up unit alone, so I did not change anything there. Does anyone know how to fix this?
