User Panel
User Panel
User Panel
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Posted: 12/4/2017 11:28:56 PM EDT
[#1]
I grease the threads, barrel extension, and face of the receiver. 30-80 lbs. on the barrel nut. No torque rating needed on the MD. Use a crush washer and time slots if A2.
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Posted: 12/4/2017 11:29:52 PM EDT
[#2]
Yes, a light coat of grease on the upper receiver threads as well as the barrel extension isn't a bad idea. Torque to 30-80 ft lbs. I never do less than 35, generally going for 45-55.
I never grease the receiver extension in the lower before it goes in. In fact, sometimes I put blue loctite in it. I don't remember the specs for that if they exist. I just reef it down and either loctite or stake it. As for muzzle brake, just not more than 80. |
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Posted: 12/5/2017 2:19:16 AM EDT
[#3]
I just put a light film of Aeroshell 33ms on the extension surface and ahead of the flange as well as applying liberally to the threading on the receiver. I never put any loctite; if the upper to extension fit is loose I try another reciever of same make or different mfg
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Posted: 12/10/2017 4:26:22 PM EDT
[#4]
Thanks folks!!!!!
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Posted: 12/10/2017 5:45:53 PM EDT
[#5]
Torque spec for the castle nut is 38 to 42 foot pounds.
Torque spec for a rifle buffer tube is 35 to 39 foot pounds. Torque spec for barrel nut is 30 to 80 foot pounds. Torque spec for muzzle device is 15 to 20 foot pounds. Grease the threads of the upper receiver and the front/FSB facing side of the barrel extension flange. There is no reason to coat the entire barrel extension with grease. The TM calls for greasing all of the threads that have a torque spec, minus the barrel threads for the flash suppressor, but I grease them anyway. |
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Posted: 12/10/2017 7:21:06 PM EDT
[#6]
Make sure you use graphite-free grease and loctite. I put a thin layer on the barrel extension and the threads and torque to 45 ft. Lbs.
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Posted: 12/22/2017 11:57:27 PM EDT
[#7]
I shot with a club member that was a Army Presidents 100 shooter.... about flash/mb he said “hand tight Red Loctite”.
HH |
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Posted: 12/24/2017 1:50:12 AM EDT
[#8]
Thread and unthread the barrel nut a few times with some force before you go a little harder to your desired torque output.
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Posted: 1/4/2018 3:43:43 PM EDT
[#9]
Quote HistoryQuoted:
Thread and unthread the barrel nut a few times with some force before you go a little harder to your desired torque output. |
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Posted: 1/4/2018 5:03:16 PM EDT
[#10]
Grease it up. Keep in mind some after market barrel nuts have a max of less than 80 ft. lbs. and a minimum above 30.
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Posted: 1/17/2018 1:05:43 PM EDT
[#11]
I used EP grease I bought in a tub from Autozone or one of the local farm supply stores.
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Posted: 2/19/2018 5:19:50 AM EDT
[#12]
AeroShell 33 is the answer you seek. Follow the procedures in TM 9-1005-319-23.
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