Potential problem installing flash hider

[T2C]

It won’t hurt anything to pull the flash hider to inspect the muzzle crown if it will give you peace of mind.

This is what I use to support the barrel when torqueing on the flash hider. http://www.brownells.com/gunsmith-to...prod12470.aspx Put masking tape over the barrel where it will touch the vise jaws to prevent marking the barrel. Or you can put the masking tape on the vise jaws.

[Glockman1968]

@T2C

It won’t hurt anything to pull the flash hider to inspect the muzzle crown if it will give you peace of mind.

This is what I use to support the barrel when torqueing on the flash hider. http://www.brownells.com/gunsmith-to...prod12470.aspx Put masking tape over the barrel where it will touch the vise jaws to prevent marking the barrel. Or you can put the masking tape on the vise jaws.

Link busted? May be on my end.

Thank you for your input!

[Slvr_Surfr]

OP,

I have had great luck with these. Good for heavy barrels and standard profiles. The padding on the inside is rubbery, which gives good grip and is non-marring. If you plan to do more builds or mods, I highly recommend them.

http://www.brownells.com/gunsmith-tools-supplies/rifle-tools/barrel-tools/scg-ar-15-m16-accu-grip-barrel-vise-jaws-prod12799.aspx

[MistWolf]

@Glockman1968

Good to know, thanks!

I’m redoing it for several reasons already mentioned, not the least of which it’s not right. I like doing things correctly for piece of mind if nothing else. Plus I want to see if anything damage wise is visible, and go from there.

I’ll give Faxon a IM to see they can provide any insight to whether or not I’ve done any harm thus far.

If you really want to do it right, toss the crush washer and use a shim set instead.

PS- If you really did over torque the crush washer (crush washers expand inward as well as outward), be prepared for further drama involving a hammer, an anvil, a die grinder and a cutting wheel

[Glockman1968]

@MistWolf

If you really want to do it right, toss the crush washer and use a shim set instead.

PS- If you really did over torque the crush washer (crush washers expand inward as well as outward), be prepared for further drama involving a hammer, an anvil, a die grinder and a cutting wheel

To quote a great line from a fun to watch movie, " What’s with these negative waves man". :lol:

[Glockman1968]

@Slvr_Surfr

OP,

I have had great luck with these. Good for heavy barrels and standard profiles. The padding on the inside is rubbery, which gives good grip and is non-marring. If you plan to do more builds or mods, I highly recommend them.

http://www.brownells.com/gunsmith-tools-supplies/rifle-tools/barrel-tools/scg-ar-15-m16-accu-grip-barrel-vise-jaws-prod12799.aspx

Those are sweet! My wifes going to kill me…lol

Thanks guy!

[system]

@Glockman1968

Good to know, thanks!

I’m redoing it for several reasons already mentioned, not the least of which it’s not right. I like doing things correctly for piece of mind if nothing else. Plus I want to see if anything damage wise is visible, and go from there.

I’ll give Faxon a IM to see they can provide any insight to whether or not I’ve done any harm thus far.

We would be happy to assist. Took the time to read through the thread and so far, the help provided has been spot-in (thank you M4C community!).

Until we can see a picture of the crown, we would not be able to advise if there was an issue from the flash hider. However, the QPQ and base steel is likely far harder than the steel in the A2 hider. As such, the hider has most likely deformed versus the barrel.

Please let us know if we can assist further or send us an e-mail with a photo and we can give you a definitive response.

[daddyusmaximus]

@MistWolf

If you really want to do it right, toss the crush washer and use a shim set instead.

PS- If you really did over torque the crush washer (crush washers expand inward as well as outward), be prepared for further drama involving a hammer, an anvil, a die grinder and a cutting wheel

I had to do that when I took off my KX3. I may have used profanity that day. Live and learn.

[Glockman1968]

@FaxonNathan

We would be happy to assist. Took the time to read through the thread and so far, the help provided has been spot-in (thank you M4C community!).

Until we can see a picture of the crown, we would not be able to advise if there was an issue from the flash hider. However, the QPQ and base steel is likely far harder than the steel in the A2 hider. As such, the hider has most likely deformed versus the barrel.

Please let us know if we can assist further or send us an e-mail with a photo and we can give you a definitive response.

Thanks Nathan. Taking football time to read it all means a heck of alot in my book. And says alot about your company.

I’ll definitely keep the thread up to date with the results. Keep it all public here for the next guy that runs into this.

Looks like a new FH may be in order. Should have pics up here on Wed…Thurs latest.

[Glockman1968]

@daddyusmaximus

I had to do that when I took off my KX3. I may have used profanity that day. Live and learn.

Hopefully I’m done living and learning, i’ve had my fill. LOL

All the replies mean an awful lot gentlemen.

Thanks.

[Glockman1968]

Ok, so I got it off and it did NOT take hardly any force to do so.

Nowhere near what it took to get it on. Pics inbound shortly. I see no visible damage, but the pics should help…hopefully.

Barrel:

[](http://s1061.photobucket.com/user/Glockman1968/media/20150921_163150.jpg.html)http://i1061.photobucket.com/albums/t473/Glockman1968/20150921_163150.jpg[/IMG]](http://s1061.photobucket.com/user/Glockman1968/media/20150921_163135.jpg.html)

[Glockman1968]

Ok, I suck at that…just click on one and go to my photobucket. There are pics of the crush washer, barrel, flash hider.

A few of them show the depth of the threads on the barrel vs the depth of the threads of the flash hider. The one with the pin is the backside pin on the micrometer set to the maximum depth of the FH in relation to the barrel thread depth. No way possible for the FH to thread to the shoulder of the barrel.

i can answer any question you may/may not have about the pics.

[system]

Looks like some metal is left over from the flash hider on the edge of the crown. Deburring tool will work or a quick touch with a fine grit sandpaper.

Also took a second to check on the barrels from that batch. All were in-spec from internal Q/C so you should be good to go!

-Nathan

[Glockman1968]

@FaxonNathan

Looks like some metal is left over from the flash hider on the edge of the crown. Deburring tool will work or a quick touch with a fine grit sandpaper.

Also took a second to check on the barrels from that batch. All were in-spec from internal Q/C so you should be good to go!

-Nathan

And the happy dance is now underway!!!

Define, please kind sir, “fine grit sandpaper”. 220?

[GH41]

If you got the FH off with those soft wood blocks it wasn’t on near 80 F/P. That’s a good thing!

[system]

@Glockman1968

And the happy dance is now underway!!!

Define, please kind sir, “fine grit sandpaper”. 220?

That will work. All you will be doing is knocking off the metal shavings. Even 80 grit would work in a pinch.

[Glockman1968]

@GH41

If you got the FH off with those soft wood blocks it wasn’t on near 80 F/P. That’s a good thing!

Well, it is the Flame Fluted barrel so once I compressed those 2x’s I had almost 100 percent bearing surface on that barrel and the flutes would act as a stop.

That being said, it did come off WAY easier than on.

Now I’m wondering what caused all the rukus when I put it on…not a new crush washer is my first guess. Then that caused the FH to bottom out on the barrel.

Wonder if a new FH is in order?

How would I know if thats the case?

[HansTheHobbit]

I imagine your flash hider is just fine. But if it gives you peace of mind, they’re only 5-10 bucks. Just pick one up the next time you order something. Just about everyone sells them.

[Glockman1968]

@FaxonNathan

That will work. All you will be doing is knocking off the metal shavings. Even 80 grit would work in a pinch.

Roger that!

Thanks for your help here Nathan :thank_you2:

[Glockman1968]

@HansTheHobbit

I imagine your flash hider is just fine. But if it gives you peace of mind, they’re only 5-10 bucks. Just pick one up the next time you order something. Just about everyone sells them.

Well yes and no. I know there all over the place, but the one I’ve got is $50.00 from DD. And I like it.

No sweat though, all good. New crush should be here Wed.

Thanks for all the help Hans, very much appreciated.