saprengr13 - It's no use getting the load assist buttons from S&W because you can't install them in the 10 round long mags anyway. The pin they use to restrict the capacity will not allow you to get the follower down far enough to insert the button. Best thing is the nut & bolt, it works for me in restricted CA.

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S&W15-22 RIA 1911
CZ75B SR9