Yve technologies magazine extension base pad - HYVE Technologies Magazine Extension Base Pad for M&P Shield 9mm 8-Round Mag

I have been using the Magazine Extension Base Pad for a few months now and have to say that they are a great upgrade to my magazines. They did what they advertised, the only complaint that I have it that the magazine does not feed into the magazine well as smooth as I would want it and it sometimes catches and does not want to lock into place. I have to use some effort to ensure that it locks into place if I fill the entire magazine.