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6/21/2004 10:34:30 AM EDT
I have removed barrels to inspect and retighten in the past, no problem, other than wrestling with a sticky gas tube sometimes. My questions are based on the following scenario:  I am replacing the barrel on a rifle that has has no more than 500 rounds through it and has the original factory installed barrel (want longer length). I plan to keep the original bolt as it has very little if any vsisible wear.

1) the barrel that is going on is new, do I need to lubricate the barrel extension with any kind grease(like moly lube) or lubricant before inserting the new, otherwise dry barrel into the upper receiver?

2)Is it advisable to put anything on the threads of the barrel nut/upper receiver threads  (ie loctite) or just leave them dry?

3)on a bolt with no visible wear on the lugs, is it necessary to check the headspace if the bolt goes into battery with the new barrel without problems (ie what do you do).


thanks for any input



6/21/2004 10:36:49 AM EDT
[#1]
1.  yes
2.  yes.  high temp grease will work.
3.  yes.  always do this
6/21/2004 5:12:50 PM EDT
[#2]
#2- Don't use anything like Loctite, very light dab of greese is ok, such as moly.
6/22/2004 7:54:52 AM EDT
[#3]

Quoted:
#2- Don't use anything like Loctite, very light dab of greese is ok, such as moly.



Any particular brand of moly grease you guys swear by? Does the auto parts store variety work OK?
6/22/2004 3:55:24 PM EDT
[#4]
1) Yes.

2) Yes.  To to the auto parts store and ask for a little can of wheel bearing grease.  Most likely, whatever is in your grease gun now is good enough.

3) No.
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