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AR15.COM
1/22/2012 11:00:25 AM EDT
I have a Ruger Mark II that FtEx every round.  I bought the gun used and the issue may have crept in because I took it apart and clean it.  I have stripped and assembled the gun successfully a time or two in the past, so after I noticed the FTEx issue, I took it apart and put it back together again.  That didn't fix the problem.  I followed the instructions for disassembly and reassembly, but it is certainly possible I screwed it up.

The round chambers, fires, but then FTEx.

Any ideas?  Things I should check out on the pistol?
1/22/2012 11:16:10 AM EDT
[#1]
Double check the groove/slot that the extractor sits in for burs or crud.  Did you get the spring, plunger and extractor reinstalled correctly?  I have one that had some issues (from new) but it wasn't every round like yours.  A Valquartzen extractor fixed it.
1/22/2012 11:26:01 AM EDT
[#2]
Quoted:
Double check the groove/slot that the extractor sits in for burs or crud.  Did you get the spring, plunger and extractor reinstalled correctly?  I have one that had some issues (from new) but it wasn't every round like yours.  A Valquartzen extractor fixed it.


I'll take a look at what you've suggested and triple check my installation.  Worst comes to worst, I'll take a look at a new extractor.  thanks!

3/3/2012 7:32:16 PM EDT
[#3]
My MKII was getting a little iffy on extraction and I replaced the original extractor claw and spring it was rounded off on the lower edge and I suspect the sring was a little weak. Brownells sells the claw and spring as a set.
My MKII is at least 25yrs old.
3/7/2012 5:15:13 PM EDT
[#4]
I doubt very seriously it was anything you did to it.  Give it all a good blast of disc brake cleaner and then lube it up good.  

Very well may be a worn extractor.

Doc
3/12/2012 12:35:42 PM EDT
[#5]
My father's Mark II had failure to extract issues a few years ago, and again recently. Both times the extractor spring had broken or was extremely weak. His pistol is a minimum of 25 years old and this is the only problem he's had with it. replacing the spring fixed the issue both times.
3/12/2012 8:02:02 PM EDT
[#6]
I just installed a new extractor and spring last night.
I will go range test it today and give an update.
8/11/2012 1:07:56 PM EDT
[#7]
Do you know which guide you followed on assembly and disassembly?
8/11/2012 6:32:43 PM EDT
[#8]
Quoted:
Do you know which guide you followed on assembly and disassembly?


This one is good = External http://www.1bad69.com/ruger/field_strip.htm

Internal http://www.1bad69.com/ruger/internals.htm