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1/6/2015 7:24:55 PM EDT
how the F*** do i remove this QDC flash hider? tried soaking it in water and a vice and all sorts of things. Cant get the damn thing off.
Does that peg on the flash hider need to be removed before i unscrew it? what is that?
Sorry i am completely un familiar with these KAC mounts.
Any hints?
Thank you!

1/6/2015 7:47:33 PM EDT
[#1]
What length barrel?  If it was 14.5 or there abouts it's possible the FH is pinned and welded to get the barrel up to 16".  

1/6/2015 8:07:07 PM EDT
[#2]
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Quoted:
What length barrel?  If it was 14.5 or there abouts it's possible the FH is pinned and welded to get the barrel up to 16".  

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11.5" SR16. Its shouldnt be pinned on. maybe they used rocksett.

so that little stake sticking up is just for the can? or is it screwed in to the threads?
1/6/2015 8:16:24 PM EDT
[#3]
I ended up cutting mine off (A2 hider).  Couldn't get it to budge.

1/6/2015 8:26:49 PM EDT
[#4]
Use heat. And a proper vise/attachment method like the geiselle rod.
1/6/2015 8:53:38 PM EDT
[#5]
what a pain, ill try tomorrow.
1/6/2015 9:11:50 PM EDT
[#6]
Rocksett being a ceramic I've heard whacking the end of the flash hider with a hammer to fracture it can help.  

A fast heat of the FH to get some movement on it might also help.

The water soak thing for Rocksett I've never tried, I use RS but I had no problem removing the two brakes I taken off in the past, they popped off pretty easy.   I ramble, anyway I've read 'soak for 24 hours' with RS if you haven't tried that long might be worth a shot.

If you don't have a reaction rod then it might be cheaper to hit up a FLGS than buy the tool.  (friendly local gun smith/shop)

Be careful, you can break your index pin or damage your upper if you apply too much force trying to take it off.

Worst case careful dremel work and a chisel will get it off without jacking up the barrel or the threads.
1/6/2015 11:21:06 PM EDT
[#7]
Quote History
Quoted:
Use heat. And a proper vise/attachment method like the geiselle rod.
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No Geissele reaction rod with an SR-15 upper. This one almost necessitates an upper receiver block.
1/7/2015 12:39:02 AM EDT
[#8]
I got it off!!! just a vice and some serious arm muscle (from the guy at home depot). Thanks y'all!

1/7/2015 8:42:12 AM EDT
[#9]
Quote History
Quoted:


No Geissele reaction rod with an SR-15 upper. This one almost necessitates an upper receiver block.
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Quoted:
Quoted:
Use heat. And a proper vise/attachment method like the geiselle rod.


No Geissele reaction rod with an SR-15 upper. This one almost necessitates an upper receiver block.


That could lead to sheering an index pin. In this case, barrel vise blocks are the correct answer.

OP, glad you got it off.
1/7/2015 4:27:23 PM EDT
[#10]
Quote History
Quoted:


No Geissele reaction rod with an SR-15 upper. This one almost necessitates an upper receiver block.
View Quote View All Quotes
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Quoted:
Quoted:
Use heat. And a proper vise/attachment method like the geiselle rod.


No Geissele reaction rod with an SR-15 upper. This one almost necessitates an upper receiver block.



I used KAC's rod,  taped off the flats to prevent marring and a breaker bar.

Edit: but this was a 7.62 flash on an ECC.
1/7/2015 9:54:38 PM EDT
[#11]
Quote History
Quoted:


That could lead to sheering an index pin. In this case, barrel vise blocks are the correct answer.

OP, glad you got it off.
View Quote View All Quotes
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Quote History
Quoted:
Quoted:
Quoted:
Use heat. And a proper vise/attachment method like the geiselle rod.


No Geissele reaction rod with an SR-15 upper. This one almost necessitates an upper receiver block.


That could lead to sheering an index pin. In this case, barrel vise blocks are the correct answer.

OP, glad you got it off.


Since OP has an 11.5" upper, he would have had to remove the URX to use barrel blocks. This is not an easy process for someone without the expensive tool.
1/7/2015 9:59:21 PM EDT
[#12]
Quote History
Quoted:



I used KAC's rod,  taped off the flats to prevent marring and a breaker bar.

Edit: but this was a 7.62 flash on an ECC.
View Quote View All Quotes
View All Quotes
Quote History
Quoted:
Quoted:
Quoted:
Use heat. And a proper vise/attachment method like the geiselle rod.


No Geissele reaction rod with an SR-15 upper. This one almost necessitates an upper receiver block.



I used KAC's rod,  taped off the flats to prevent marring and a breaker bar.

Edit: but this was a 7.62 flash on an ECC.


That works too! And better.
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