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Posted: 8/2/2017 7:18:01 PM EDT
| So I got the Grendel bug and purchased an Odin Works barrel and of course wanting to get the most accuracy possible I am looking for Loctite 620 to seat the barrel to the receiver. I read in a recent G&A article that using it could possibly help. I will be trueing the receiver face, but spending $20+ dollars for 10 ml of Loctite for a single build seems rather excessive. SO I am asking if any one knows where to get '620" in a smaller amount. I did find it on ebay for less than $10 but don't want to wait 3 weeks to get it. Any help would be greatly appreciated |
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$16 w/ Prime through Amazon.
https://www.amazon.com/dp/B003T7UXUI?tag=vglnk-c102-20 |
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Quoted:
So I got the Grendel bug and purchased an Odin Works barrel and of course wanting to get the most accuracy possible I am looking for Loctite 620 to seat the barrel to the receiver. I read in a recent G&A article that using it could possibly help. I will be trueing the receiver face, but spending $20+ dollars for 10 ml of Loctite for a single build seems rather excessive. SO I am asking if any one knows where to get '620" in a smaller amount. I did find it on ebay for less than $10 but don't want to wait 3 weeks to get it. Any help would be greatly appreciated PS: Guns and Ammo is a poor source of info about building an AR, Arfcom is much better. |
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Quoted:
G: I hate to be the contrarian, but you are making a big mistake applying high temp threadlocker anywhere on your rifle, especially the interface between barrel and receiver. Normal installation will involve a fairly tight fit between the barrel extension and the upper receiver, all that's required is some moly grease on the threads as an anti-seize compound. It the extension is a rather loose fit into the receiver, some people like to "bed" it with some blue Loctite, personally, I believe the barrel nut tightens the two parts more than enough to avoid any movement after installation. If you apply red Loctite (type 620), the barrel will be very difficult to remove without application of considerable heat and hammering, something your pet rifle doesn't deserve. - CW PS: Guns and Ammo is a poor source of info about building an AR, Arfcom is much better. |
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Thanks, RJ. I did in fact check google for 620 before commenting. However, I failed to notice 620 is not the same as the common red permanent Loctite no 271.
620 is not a threadlocker at all, rather it is intended for permanent fitting of slip-fit or press-fit cylindrical parts, as in iron cylinders pressed into a cast aluminum engine block. It has a very high tensile strength. Accordingly, removing a barrel "bedded" in 620 would likely be difficult indeed. Personally, I prefer to keep all kinds of adhesive away from the barrel extension/receiver joint on the expectation that my barrels will eventually need to be removed. - CW |
| Bedding an AR barrel is really overkill in my opinion, I have bedded barrels on my long range guns, but the design of this platform, I have never talked to anybody that could show that it actually changed the accuracy of the gun. If you torque your barrel down correctly, it is not going to move. |
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Quoted:
Devcon epoxy works well as a bedding compound. If you decide to use it be sure to use a release agent on the interior of the receiver before assembling. Paste wax works well. Promptly remove any compound that squeezes out. |
| bedding it with 620 will help accuracy. most highpower shooters that do this just consider that its an extra $75 for a new receiver when time to change barrel. If you can afford to burn out a barrel you should be able to afford a new upper receiver with barrel change. |
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