I do admit to be being old by the definition of most people. And my strength is about half what it was at my (long ago) peak. Decided to load one of the 15 round magazines without the aid of a device. Got 13 in, the last 2 were no-go barehanded. I do have a LULA but have not tried it on the Glock.
Too much strain just hurts anymore.
So what has been your experience with the Glock 15 round mags?