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The reverse plug is an improvement that reduces the chance of spontaneous disassembly, as noted. I would also recommend that you install dual captured recoil springs with a full-length guide rod. The 3" 1911's do get greatly improved function with such a rig - the short barreled guns are the only 1911's I would use a FLGR with (people who know me know how useless I think a 5" FLGR is).
The dual captured spring setup has significantly longer life (2000 rounds for the Kimber Ultra Carry) than the original single spring (Colt recommended changing springs at 300 rounds). Racking the slide is easier for a dual spring, and feeding problems are reduced.
You may be able to get an original spring setup to work well, but if you're going to use the gun for self-defense, it needs all the help it can get. IYA!
Buck
The dual captured spring setup has significantly longer life (2000 rounds for the Kimber Ultra Carry) than the original single spring (Colt recommended changing springs at 300 rounds). Racking the slide is easier for a dual spring, and feeding problems are reduced.
You may be able to get an original spring setup to work well, but if you're going to use the gun for self-defense, it needs all the help it can get. IYA!
Buck
