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8/30/2006 9:26:51 PM EDT
I'm wondering if it could be the enidine buffer in it.  

Taken it out 3 times so far and each time I shot about  170-200 rds I start having problems with the rifle firing, extracting the case, then beginning to chamber a round but stops about halfway with the round at an upwards angle of 45 degrees.  Now I have problems with the enidine buffer being really hard the last 1/2" of pull on the charging handle and I'm unable to lock the bolt back without really muscling the charging handle back.  Tried it in two different lowers and same result where as before it never did that.  Put a H buffer in and problem solved.  I wonder exactly how the enidine buffer works.  It does the fail to chamber on several different kinds of ammo around the same round count.  I wonder if it something happens to the insides of the enidine to start giving me these problems.  It never happens through the first 150 rds or so.  
8/30/2006 11:02:44 PM EDT
[#1]
Sounds like the stroking rod on the buffer is seizing up.

You might want to send it back for a replacement.
8/30/2006 11:03:19 PM EDT
[#2]
Double post.
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