All the discussion of the 1911 platform over the last couple weeks got me thinking, and 4 pages of statistical analysis, discussion of abusing the central limit theorem, and questioning the link between the reliability of a pistol design to the reliability of the one in your holster* right now I came to this:
Magazines are the weak link for self-loading firearms.
If this assumption is, true does the Glock/XD/M&P vs 1911* reliability debate really come down to an inherent reliability advantage in double stack magazines over single stack magazines? This could come from two things: 1) a mechanical advantage to the double stack, because of the feed lips, the tapered upper mag body or the wider spring or 2) most of the mags for these guns are made by the company which designed the gun and the mag as a matched pair.
*I'll spare you my sleep deprived analysis.