Bad luck here
Bought two mag, One works smoothly, but the other one not working. First I thought it is spring problems then I found out it's the small metal plate connected to the spring has not been done with correct angle, so the spring can't get into correct angle. When I loaded ammo, it's need more strength and then you will find the spring can't get back. So when I wanted to fix by myself I broke the small part of the metal plate, is there any website sell the accessories of magazines.