ambi mag catch for Glocks

I saw this while browsing on the Brownells website.

http://www.brownells.com/aspx/NS/Store/ProductDetail.aspx?p=24007

Is this the downward slide?

I think so.

BTW I like your sig line, Aaron is one hell of a shot.

I hope its better than the factory ambi on the Glock 21sf. I went to armorer recert. in June and the Glock instructor advised the class to stay away from the ambi option on the sf because they break.

I would have to see that thing, but, it doesn’t look like it would last long.

I particularly liked it when I would miss and he would ask to see my pistol and proceed to put a round in the center, then inform me my sights did in fact still function properly. Humbling.