And another Loctite question...

[indyjohn]

Is the red film on this barrel red Loctite and shouldn't I remove it and apply a fresh drop or two when I install it into the upper?

And how does one remove dried Loctite? Will acetone do it?

 

[G3hkray]

I looks like loctite. There shouldn't be any there
if anything it should be thin coat of anti seize.
Yes acetone/ brake clean and a nylon brush will take it off

 

[1911ly]

Chamber end of a barrel? G3 is right. No locite used there. I am going to guess that it is dried grease or anti seize. Acetone or mineral spirits should remove it. You want a little anti seize or Moly grease on it when it goes back on.

 

[Tula47]

Chamber end of a barrel? G3 is right. No locite used there. I am going to guess that it is dried grease or anti seize. Acetone or mineral spirits should remove it. You want a little anti seize or Moly grease on it when it goes back on.

^^ This, there are very few things (at least in my opinion) that require red loctite and on the chamber end of the barrel is not one of those places.

 

[aclark]

I have heard of people "bedding" the barrel with loctite, but always assumed blue was used. I would put some grease on there instead as well as the threads.

 

[indyjohn]

This barrel came off of a Armalite factory rifle built around 2002. Based on your comments, I would call it anti-seize instead of Loctite. I don't remember the gunsmith heating the old upper (or beating on it) to remove it.

Good advice though, this will be the first upper I've built.

 

[USMC-Johnson]

No loctite....like all others have said, should use antiseize or grease in there. Bedding it is another can of worms but i've never heard of using loctite for that purpose.

 

[phylodog]

I've never tried it myself but plenty of people have used Loctite to "bed" the extension to the receiver and claim benefits from doing to. I use BCM receivers now and they're tight enough I can't imagine there being much benefit to it.

Redloctite on the Barrel Extension Works! - AR15.COM

 

[USMC-Johnson]

I've used some other compounds to bed loose uppers to receiver extensions but its a PITA and a high quality barrel mated to a high quality upper can already be a huge PITA to mate (which is perfect in my opinion).

 

[indyjohn]

Thanks for the input fellas.

I haven't done a test fit on the components yet. This is supposed to be a build done exclusively by my Jr. Shooter, I am supposed to only be an advisor, no hands on for me. We'll see how that goes.

 

[1911ly]

Thanks for the input fellas.

I haven't done a test fit on the components yet. This is supposed to be a build done exclusively by my Jr. Shooter, I am supposed to only be an advisor, no hands on for me. We'll see how that goes.

I've done this with my boy a few times on a couple 80% builds. It's awesome time well spent. And he has a great memory of a gun build that he and his dad done together!