Greetings!
I purchased the GHK AUG GBBR as my first airsoft (always loved AUG and wanted a GBB) and I recieved it today. First thing that I noticed was that I could not fit my standard 5.95mm BBs into the mag. My brother told me to file the sides of the loading tip until it fits and I was then able to put BBs in (albeit with still some minor resistance, didn't want to file it too much though I feel I kinda did).
However, there is an issue when I actually fire the airsoft: the first shot or two work but when I try to fire a third time, no blowback and nothing. When I disasemble the AUG, there is always a crushed BB just under the barrel slot.
I'm wondering if:
A) Is it normal that I need to file away at the loading tip of a magazine to fit in BBs? I feel like given the cost of a magazine it would fit BBs right out of the box
B) Could the issue with the BB getting stuck because I still haven't filed away enough at the mag tip and the AUG gets too much resistance trying to shoot it?
EDIT: pic of what happens