A lot. I carry a G26, I've got 33, 17, 12 and 10 rounders. I've got different sizes in my range bag. I've got spare mags in my car. I've got spare mags stashed around the house. I've got unopened mags in an ammo can. For my AR, 10 magazines loaded, yeah, ex military. My AR is my house long gun, I have 4 of them loaded with TAP, one in the gun and 3 in a bag with a flashlight. The others I keep in the range bag for the rifle. I've got a few more unopened in an ammo can. Pmags are cheap. I don't understand having just a few.