Plan on new basepads for however many mags you have - Killer Innovations Velocity CZP10C Pistol Magwells

The machining and fit/finish are fantastic! It is a very slim magwell that feels fantastic. Gives you a better grip on the gun for sure however... im not so sure you gain much in the way of a bigger opening or a funnel for that super tacticool speed reload. You will absolutely have to buy the matching KI basepads though. Not factory or other brands pads will fit nor can be easily modified to fit. So aside from the substantial cost (if you have very many mags) its a great product