Gunsmithing Grease on receiver extension and barrel nut?
- Thread starter Dtarget
- Start date
Re: Grease on receiver extension and barrel nut?
Can't spear to the AR but I use Jet Lube 550 on barrel threads on bolt guns. I have had two gaul in stainless actions, not good.
Can't spear to the AR but I use Jet Lube 550 on barrel threads on bolt guns. I have had two gaul in stainless actions, not good.
Re: Grease on receiver extension and barrel nut?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Dtarget</div><div class="ubbcode-body">Do you recommend useing anti-seize grease on the threads when installing the receiver extension or barrel nut on an AR? </div></div>
Usually your fine. Never use parts brake cleaner or degreaser on any threads, that is the fastest way to gall something up....How do I know?????
I use a spray on lube that is rated at 450 degrees F on my threads now. It dries and wont break down when baking in the oven.
Mark
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Dtarget</div><div class="ubbcode-body">Do you recommend useing anti-seize grease on the threads when installing the receiver extension or barrel nut on an AR? </div></div>
Usually your fine. Never use parts brake cleaner or degreaser on any threads, that is the fastest way to gall something up....How do I know?????
I use a spray on lube that is rated at 450 degrees F on my threads now. It dries and wont break down when baking in the oven.
Mark
Re: Grease on receiver extension and barrel nut?
NO. Mil standard is a little bit of grease ..... high temp bearing grease is what I usually use when installing a barrel nut.
NO. Mil standard is a little bit of grease ..... high temp bearing grease is what I usually use when installing a barrel nut.
Re: Grease on receiver extension and barrel nut?
I always use moly infused lithium grease.
http://www.valvoline.com/products/consumer-products/grease-gear-oil/grease/65
Certain anti-seize can create galvanic reaction between the steel barrel nut and the aluminum of the receiver thread.
I always use moly infused lithium grease.
http://www.valvoline.com/products/consumer-products/grease-gear-oil/grease/65
Certain anti-seize can create galvanic reaction between the steel barrel nut and the aluminum of the receiver thread.
Re: Grease on receiver extension and barrel nut?
Moly grease. I have a tub of Coastal from Auto Zone that will last me for the next life.
I couldn't find any with "Armalite" marked on the can.
Moly grease. I have a tub of Coastal from Auto Zone that will last me for the next life.
I couldn't find any with "Armalite" marked on the can.
Re: Grease on receiver extension and barrel nut?
Moly grease is ok. It's used to help get the proper preload on the barrel nut. Even better is a new torque specific grease from ARP called Ultra Torque ARP UltraTorque . Even with Moly grease you can get false torque values on a torque wrench. That being said I've got a tub of Brownells Moly that'll last me quite a while and I'm in no hurry to replace.
Moly grease is ok. It's used to help get the proper preload on the barrel nut. Even better is a new torque specific grease from ARP called Ultra Torque ARP UltraTorque . Even with Moly grease you can get false torque values on a torque wrench. That being said I've got a tub of Brownells Moly that'll last me quite a while and I'm in no hurry to replace.
Re: Grease on receiver extension and barrel nut?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Salmonaxe</div><div class="ubbcode-body">I always use moly infused lithium grease.
http://www.valvoline.com/products/consumer-products/grease-gear-oil/grease/65
Certain anti-seize can create galvanic reaction between the steel barrel nut and the aluminum of the receiver thread. </div></div>
Is the copper anti seize ok to use? Glock put it on It's handguns and Sinclair has a tube in their catalog.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Salmonaxe</div><div class="ubbcode-body">I always use moly infused lithium grease.
http://www.valvoline.com/products/consumer-products/grease-gear-oil/grease/65
Certain anti-seize can create galvanic reaction between the steel barrel nut and the aluminum of the receiver thread. </div></div>
Is the copper anti seize ok to use? Glock put it on It's handguns and Sinclair has a tube in their catalog.
Re: Grease on receiver extension and barrel nut?
Royco64 and Castrol Braycote 664 are the same mil spec. They all have corrosion
inhibitors in them, seems to be key.
Royco64 and Castrol Braycote 664 are the same mil spec. They all have corrosion
inhibitors in them, seems to be key.
Re: Grease on receiver extension and barrel nut?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jtv3062</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Salmonaxe</div><div class="ubbcode-body">I always use moly infused lithium grease.
http://www.valvoline.com/products/consumer-products/grease-gear-oil/grease/65
Certain anti-seize can create galvanic reaction between the steel barrel nut and the aluminum of the receiver thread. </div></div>
Is the copper anti seize ok to use? Glock put it on It's handguns and Sinclair has a tube in their catalog. </div></div>
No.
http://fourseasonsroofingandsiding.com/mixmetals.htm
http://www.corrosion-doctors.org/Forms-galvanic/galvanic-corrosion.htm
http://www.corrosion-doctors.org/Definitions/galvanic-series.htm#Compatibility
The only anti seize one should use is zinc.
Just use the moly infused lithium grease. It's cheap and it works. Torque and loosen 3 times when tightening the barrel nut. 30-80ft/lbs is the torque range for the bbl nut. This is a huge range of torque so achieving exact torque is pointless. Also impossible since aligning for the gas tube and rail orientation is needed.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jtv3062</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Salmonaxe</div><div class="ubbcode-body">I always use moly infused lithium grease.
http://www.valvoline.com/products/consumer-products/grease-gear-oil/grease/65
Certain anti-seize can create galvanic reaction between the steel barrel nut and the aluminum of the receiver thread. </div></div>
Is the copper anti seize ok to use? Glock put it on It's handguns and Sinclair has a tube in their catalog. </div></div>
No.
http://fourseasonsroofingandsiding.com/mixmetals.htm
http://www.corrosion-doctors.org/Forms-galvanic/galvanic-corrosion.htm
http://www.corrosion-doctors.org/Definitions/galvanic-series.htm#Compatibility
The only anti seize one should use is zinc.
Just use the moly infused lithium grease. It's cheap and it works. Torque and loosen 3 times when tightening the barrel nut. 30-80ft/lbs is the torque range for the bbl nut. This is a huge range of torque so achieving exact torque is pointless. Also impossible since aligning for the gas tube and rail orientation is needed.
Re: Grease on receiver extension and barrel nut?
I use Automotive Brake Caliper Grease. It's nothing fancy, but it's thick, withstands high temperatures, and stays put. All we're looking for here is a little lubrication, and then something to keep moisture out and prevent galling if you ever have to disassemble it.
-matt
I use Automotive Brake Caliper Grease. It's nothing fancy, but it's thick, withstands high temperatures, and stays put. All we're looking for here is a little lubrication, and then something to keep moisture out and prevent galling if you ever have to disassemble it.
-matt
Re: Grease on receiver extension and barrel nut?
Kroil on the nut threads before removing it wouldn't hurt a thing.
Kroil on the nut threads before removing it wouldn't hurt a thing.
Re: Grease on receiver extension and barrel nut?
I use Never Seez blue moly. It doesn't have graphite like most greases which can promote galvanic corrosion. Its temperature range and dropping point are also pretty much overkill for anything an AR will see.
http://www.bostik-us.com/files/tdsfiles/NSBlueMoly.pdf#BlueMoly
I use Never Seez blue moly. It doesn't have graphite like most greases which can promote galvanic corrosion. Its temperature range and dropping point are also pretty much overkill for anything an AR will see.
http://www.bostik-us.com/files/tdsfiles/NSBlueMoly.pdf#BlueMoly
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