Welcome to forum. I wanted to point out this thread is almost 5 years old.

There are a lot of threads and Youtube vids on removing the mag safety. If you chose to do so, I suggest you use whatever search engine you prefer to find them. There is no need to buy a special spring. If you prefer, you can find one here.

Mag Safety Deactivation Spring [1787] - $4.00 : Welcome to Speed Shooter Specialties