Hi, So recently out of nowhere the mag of my KJW M4 GBBR would drop free out of nowhere while firing. It can even be removed if I pull on it hard enough without even touching the mag release! Would I need to file down the mag part that catches on with it? Or file down the mag release part? Or should I just get a new mag release? Which brands will work with this one? The photo shows the two silver parts that rub against each other.