I’m not a fan of non-OEM mags or non-OEM mag base pad/plate extensions. Best case scenario, the mag functions normally. Any other scenario, the mag malfunctions. I personally wouldn’t risk it in the setting of self defense. When your factory mag already holds 8-ish rounds of whatever caliber, is it worth the risk of an aftermarket non-OEM product to add 1 or 2 rounds?...especially when you are talking 15, 17, and 19 round factory mags. Just MHO.I've always wondered if its a good idea to pack aftermarket extended magazines in a car or something like that. Soemthing where you can have some extra ammo if you need it. But, will these work? Even the crazy pistol drums. Is the added firepower worth the risk of a non-OEM handgun mag? You all have any thoughts/experience with these?