I ordered a few KCI Glock 17 mags for my 19 to try 'em out. $12/each from Copes is a pretty good deal and I'd heard good things from a couple other people. Compared to a Glock 19 mag: They run fine with the 124gr Federal I have but I couldn't even load more than 6 rounds of 115gr WWB because the bullet nose rubbed Well, I guess it doesn't matter if you reload, and I have a bunch of this Federal stuff left so I'm not too worried about it but you'd think they'd make them the same exact spec as the originals, which they are not according to my calipers. Anyway, they were worth it for $12/each, and will make great mags for training, the range, and 3gun and speed steel so I'm not complaining. The one thing I will not be doing is carrying them.