Which locktite to bed with?

[1Shot]

I have searched the site and see use locktite or blue locktite or red locktite but not exactly which locktite BY THE NUMBER.
Which exact number should I use to bed the barrel extension?

[BluntForceTrauma]

A guy named Randall who used to — maybe still does — offer barrel work over at AR15.com always recommended Loctite Green 620 (#234772) High Temperature Retaining Compound. Another guy who also recommends it says it is specifically for filling press-fit cylindrical voids — which is what an AR barrel extension in the receiver channel is. And it is high temp, to boot.

[waccamawscout]

Red 609 is what criterion barrels use for their installs. Check out YouTube accurizing ar criterion barrels

[1Shot]

.Thank you for the information but this stuff sounds like it would be a permanent glue in. I have used 609 on bolts that you never want to come loose and if one has to be removed it takes a lot of heat meaning a torch. I don't want to permanently glue the barrel into the action incase the barrel does not shoot or needs replacing someday.
What are you-alls thoughts about bedding verses not bedding?

[StoneHendge]

I've used gasket shellac for several builds from an initial recommendation from Proof Research. So far so good. It's thick like molasses and will fill in any gaps if you have a little play. I spread it on with a Wally World watercolor brush. Proof recommended Permatex Indian Head gasket shellac; my local auto parts store didn't have that one so I got Lionshead gasket shellac instead. It has a temp limit of around 350-400 degrees. Proof told me a chamber will never get that hot, but if you put a heat gun on it if you want to take out the barrel, it should release pretty easily when you get it to that temp.

The fit of my Proof 6.5 CM barrel into my Aero upper receiver was as sloppy as Stormy Daniels. It would shoot bugholes if I could.

[AZHTfreak]

Blue Permatex 24300 has worked very well for me... Wood dowel through the upper receiver end and a hammer bang 'em out no problemo, if needed...

[Klem]

.
What are you-alls thoughts about bedding verses not bedding?

Seeing you asked, I have never glued the receiver to the barrel and have done a few builds. I can, however see the logic behind making that join as solid as possible. For a sloppy fit I would consider doing it however if it is a press-fit of quality parts I cannot see it helping at all.

[1Shot]

I am putting an Oden Works 223 barrel in an Anderson upper. It is not exactly a tight fit but it is not sloppy either. I may give the Permatex 24300 a try because I have some. I have used it and Locktite's version for many years on gunsmithing, mainly scope base and rings, and other projects. I built a 6.5 Grendel using the Oden Works barrel and Anderson upper and it fit the same as above and it shoots great without any bedding. I was hoping to do the complete build of the 223 tomorrow but when I ordered the last of the parts I needed Monday night everything was supposed to be in stock. I did not pay close attention to the email invoice of what was shipped and when I got the shipment yesterday there was no trigger with it that I had ordered. Went to the site and sure enough, "out of stock". I went to Primary arms site and ordered the same trigger which cost a little more but I also ordered me a Primary 1-8 ASSC scope and mount. I have come to the point in life that I am going to enjoy the fruit of my hard earned labor while I can still enjoy it instead of letting some nursing home get it. LOL

[kcb38]

I used blue 243 per an old recommendation from Bill Alexander that someone had posted up.

[kcb38]

as sloppy as Stormy Daniels.

[BluntForceTrauma]

What are you-alls thoughts about bedding verses not bedding?

Conventional Wisdom seems to say all the serious shooters bed their barrels, but I've heard some of the same guys say that some loose guns shoot great and some tight guns don't shoot.

My theory is I'm not gonna go thru the hassle of bedding barrel and then struggling to remove it later, unless it doesn't shoot when "dry" and I need to start diagnosing.

[1Shot]

I had to go to town today and decided to stop and an old Mom and Pop auto parts store and can you believe it they had "Permatex Indian Head gasket shellac" and it was only $2.50 . I have used this stuff back in the day to hold paper gaskets on water pumps etc. I think I am going to give this a try. It does set up hard and if needed parts could be separated fairly easy.

[Bowhntr6pt]

I like using shim stock... stainless steel... to make a tight fit.

[mongoosesnipe]

blue provides plenty of hold and doesnt require heat to remove if needed i have taken them apart when rebarreling uppers usually requires a wooden dowel and a hammer and the blue locktite sticks to the barrel over the anodized aluminum so you can actually observe where the voids were, they are usually very minimal but considering the minimal cost i figure why not

[CastleBravo]

I used whatever green stuff Midwest Industries includes with their hand guards, and I was unable to pound the barrel out later when I wanted to polish up the extension lugs. I bet heating it up with a torch would have done the trick, but I didn't want to bother with it. That upper is glued so tight I imagine it would function just fine without a barrel nut.