I couldn’t do it the way shown in the video after many attempts at trying the MCARBO power magazine release spring.
My method is much much easier to install. You place the spring in the mag release hole, no grease necessary. Then you hold the spring down with something, I used a plastic punch but you can use anything as long as you hold the spring down.
Then you simply put a flat head screw driver through the mag release as you hold the spring down with the other hand and you easily slide the spring into placement.
Below is a picture to show you how I did it.
I had to use my right hand to take the picture but in the picture below, I am holding the spring into place with my left hand using the punch to push down on the spring, and with my right hand I would use the screw driver to easily guide the spring in. Since I am securing the spring with the punch, it will not fall out as you guide it in.