I have Rock Island Armory M1911 compact (Officer's ACP size).  Since I bought it last year it has always been a little flaky on extraction.  

I took it to the range yesterday and it was failing to extract on about every third round.  The case stayed in the chamber, pulled maybe halfway out, and the next round was pushed up against the bottom of the unextracted case, making it hard to eject the magazine without some fiddling.

I'd like to cure this problem, since obviously I can't trust this pistol with my life.  Seems to me the extractor is either poorly shaped and slides off the cases, or the extractor spring may be too weak.  

Can anyone recommend a good extractor/spring combo that will work well with this pistol?

Thanks!

 

Sounds like the extractor doesn't have proper tension.  

There's a document explaining how to adjust it at this site:  www.m1911.org/full_technic.htm

There might also be a burr in the chamber, but that's easy enough to check.

Cool, thanks guys.

I'll adjust the tension and try it again...if that doesn't fix it, I'll replace the extractor.