The 1911 has in MHO three weak point; magazines; extractors and staked plunger tubes.
On the magazines it is usually deformed feed lips or the base giving enough so that the mag inserts too far and jams the gun up tight. This could be fixed with sturdier magazines that have a built-in metal stop ledge or rim on the bottom so that it cannot go in too far.
The extractors can be finicky. Bill Wilson may have solved this problem with a conventional type extractor on his poly modle (KZ something). I don't know of anyoone who has experience with one, but it would seem a logical fix.
Staked plunger tubes are not necessary, they can be machine as part of the whole frame.
The 1911 is a great gun (love mine) but it could use a little modernization. I have been to a number of high speed schools and shoot IDPA quite a bit. The fast majority of guns used are 1911s and Glocks. The 1911s malfunction, break, or jam on a regular basis because of equipment problems. Equipment enduced malfunctions in a Glock are pretty rare. I can't shoot my Glock as well as my 1911, but guess which one I carry and bet my life on every day. I MHO there are only four rules about selecting a carry gun.
1. Must be reliable
2. Must be reliable
3. Must be reliable
4. See rules 1 through 3
In my experience the pistols that seem the most reliable on the line, are in order; Revolvers, Glocks, Sigs, Berettas, then 1911s.
I am sure there are other very reliable pistols such as H&Ks, Khars, etc., but I don't see many of them on the firing line so I don't get to see them actually perform. Anytime I see someone have a malfunction, I make a mental note of what type and model of gun it was. On Smiths and Berettas a see a high percentage of their malfunctions as shooter induced by hitting the slide mounted safety when they did not intend to.
I think some of the problems with 1911 are people trying to tune them too tight or trick them out. I am sure a completely reliable 1911 could be had, but for me the piggy bank doesn't have the available funds at this time - however it is on my "To Do List".
Glocks are not without their problems. I think their weak points are poor magazine springs, not fully supported chambers sub-power recoil springs, and the trigger return spring.
I side stepped these by using Wolff mag springs, a conventially rifled after market barrel with fully supported chamber, stronger recoil spring, and a New York type trigger return with a 3.5lb connector.
I have personally only experience one malfunction with my Glock in about 10K+ rounds (G23) and that was caused by a weak mag spring. I have seen several Glock trigger return spring break, but it is possible that they were self installed backwards, which does play on thier weak point. You can still shoot the gun with a broken trigger return spring but have to manually reset the trigger (push it forward)
Never had a Kaboom, but have friends that have. I belive this is caused #1 by the unsupported chamber, #2 by the fact that the Glock will fire further out of battery than most autos and #3 possibley a weak recoil spring that otherwise should have completly closed and locked up the slide into battery.
This turned out to be longer than I though!
Love 1911s, but depend on my Glock
TEX