When you have found that you have the right handgun for CCW, sometimes you’re better off with a smaller capacity firearm and a spare magazin than carrying a full size auto with a lot of bullets.   I have never had a magazine fall apart on me, but I’m sure it has happened to some people, but that’s not the reason i carry a spare magazine.   I had a lot of after market magazine laying around when the assault weapons ban was going on and much of it was after market magazines.   I picked up several 10rd magazines for my Kimber 1911 guns only to find that they were not reliable at all.   The balance was absolutely terrible and there was no way i would consider carrying something like that in a holster.

When it comes to using magazines in firearms like the M16, I have heard a lot of my military friends say they liked the 20rd magazines because it was better balanced and they could get into better shooting positions lower to the ground.   I know there are plenty of ways to get down low on the ground, but let’s just talk about balance.   Wilson Combat magazines are the most reliable and drop free on my 1911s, but I’m still not a fan of anything other than 8rd magazines.  Some people claim they are reliable, but the weight of 10rds of 45acp on a spring and 7rds is considerable and even though people will argue this, I have not found them to be as reliable for as long.