These magazines have worked very well for me. They feed flawlessly (after a little work),the plastic around the feed tube is very thick, this caused the mag to be very tight on the hop-up feed tube, not allowing the mag to drop when the release was pressed. The thick molding also made it hard to get the mag into the gun properly. I had to thin out the plastic to make the mag fit properly in my ICS.After that they work well. They are light and they don't rattle when moving on the field.

These are great little mags, I like the 'old school' Vietnam short style. Because they are shorter it can be more difficult to get them in/out of your ammo pouches. Also, they are supposed to be 130 round but it is extremely difficult to get more than 90-100 rounds in them, the spring gets tight. That's why I went with 4 stars.