[ARCHIVED THREAD] - Barrel Installation

Posted: 6/6/2014 9:26:50 PM EDT

When I installed my barrel on my rifle build tonight I did not use any grease on the barrel where it fits in the receiver or the threads when installing the barrel nut. Should I remove the barrel and apply grease? If so what type of grease do I use?

Posted: 6/6/2014 9:36:51 PM EDT

[#1]

http://www.ar15.com/forums/t_3_4/580442_Barrel_Installation.html

Posted: 6/6/2014 10:22:59 PM EDT

[#2]

The purpose for the grease is twofold: prevent thread galling and generate accurate torque readings.

If you were in the middle of the spec'ed torque range (30-80lb-ft) I wouldn't take it apart just to add grease.

Posted: 6/7/2014 7:08:51 AM EDT

[#3]

I agree. But as he implied, if within a few pounds of the hi or low torque readings I certainly would, especially the low end.

Posted: 6/7/2014 8:06:58 AM EDT

[#4]

The specs called for 30-60 ft-lbs. it was at 55. It's a MI Gen 2 T series rail with the proprietary nut. I removed the nut and barrel and am applying grease to it before I reinstall.

[ARCHIVED THREAD] - Barrel Installation

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[ARCHIVED THREAD] - Barrel Installation

[ARCHIVED THREAD] - Barrel Installation