AR flash hider pinning

[bgolf92]

Does anybody know of a gun smith that can pin a flash hider to an ar15 barrel located in sonoma county or bay area? Thanks.

[Atomic Donut]

Diablo valley gun works "the gun works" in pleasant hill will do it.

[Leatherneck]

What's involved in pinning a flash hider? Does it have to be done by a gunsmith?

[kcstott]

What's involved in pinning a flash hider? Does it have to be done by a gunsmith?

No it does not.

it does however needd to be done by some one the knows WTF they are doing.

Drill hole through FH and into barrel slightly. hammer in pin, weld pin to FH if barrel is under 16"

simple as that

[DEF23]

[kcstott]

You don't have to pin ONLY. You can also do silver solider or weld in place.

Just make sure that the silver solider is "high-temp" type and that the weld is either 180 degrees of the part or in three parts taking up 180 degrees.

From the ATF FAQ section>

Quote:
The ATF procedure for measuring barrel length is to measure from the closed bolt (or breech-face) to the furthermost end of the barrel or permanently attached muzzle device. Permanent methods of attachment include full-fusion gas or electric steel-seam welding,

I take that to be a 100% weld but never seen the ATF say it was or was not.

[DEF23]

I have seen a clarification statement that states, "that it must be a minimum of a 180 degree circumferential weld or 3-spot welds not equaling less than 180 degrees" (???).

I'll dig around for it in a bit and see if I can find it again.

NOTE: Oddly enough, I have found a lot more clarification letters in the import/export regulations than anywhere else ??

Don't really know what that means for us as home builders. But when I was searching out a specif clarification letter on HK 'weld-shelves' and 'clipping & pinning' your lower --- it was nowhere to be found in the ATF documents.

I actually found it in the export/import regulations !!??

[ar15barrels]

it does however needd to be done by some one the knows WTF they are doing.

That rules out some gunsmiths...
I had a barrel come into my shop where the first gunsmith had drilled clear into the bore!

[kcstott]

That rules out some gunsmiths...
I had a barrel come into my shop where the first gunsmith had drilled clear into the bore!

And that why the post. Just because the sign says Gunsmith doesn't mean you know what you are doing in every aspect of gun work, i've seen butcher job too.

To bad there is no licensing test these boys could take to get a license from the state like a Contractors license. then at least they all could be held to a standard. But I fear that would put 30-50% out of business over night.

[dls]

I did my own.
Looks just like the one I got from BCM,maybe even a little too clean.

[DEF23]

I had a barrel come into my shop where the first gunsmith had drilled clear into the bore!

That is why I was trying top give the OP the full amount of options for legal attachment methods.

And that why the post. Just because the sign says Gunsmith doesn't mean you know what you are doing in every aspect of gun work, i've seen butcher job too.

Funny thing is, I've seen just as many butcher job come from machinist as the shade tree gunsmiths......Just because you can machine, doesn't mean that you understand or have firearm knowledge either.

Take for example, my own local machinist. Great guy and fairly good work --- but thus far I have had to fix many of his problems on bad work that he has done because he doesn't always understand the weapon system he was working on (non-metric dimensioned HK jigs, no shoulder left on an LW AR15 barrel after threading for muzzle attachment, D & T into a barrel, ect.)

All "gunsmiths" should be required to have apprenticeships with true certified gunsmiths (ACGG), as I did. I did 3 apprenticeships with three different master gunsmiths in their given fields (2 were/are members in the ACGG) and I still don't claim to be a gunsmith.

The funny thing is NONE of them did much machining at all, as most of them either had machinist on staff or a specif machinist who did 99% of their machining work for them. Most of 'worked in the white' and used a diamond file for all of their fitting.......even after the machinist did the work.

And even then, all 3 of them really specialized in their own field of 'smiting.......bolt hunting rifles, 10/22's, 1911's, ect. They could all work on other weapon systems, given enough background info or time. But I know for a fact, that none of the 3 gentleman who taught me, would know how to work on an HK, Standard model G or a Benelli.

[kcstott]

100% true. There are all kinds of machinists out there. A good friend of mine that is a hell of a good tool maker. Couldn't mount a scope if he tried. He don't change the oil in his truck with out a book

[Leatherneck]

When you weld in the pin, do you typically use gas or MIG?

[dls]

When you weld in the pin, do you typically use gas or MIG?

Tig would be best,
I have a MIG,so I used it. One quick zap on a looow setting,turned out fine.

[kcstott]

When you weld in the pin, do you typically use gas or MIG?

you could use mig but it better be done with extreme care. TIG is the only way to do it and not have a turd size glob of steel on your FH.

I do not recommend gas as it would take way to long to get it hot enough weld you would foul the heat treat on a barrel. granted it is just the muzzle but it would be fouled none the less