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Old October 19th, 2020, 02:44 PM #1
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Barrel replacement

So I have a complete Anderson upper receiver with barrel and M-Lok shroud. Tried to remove the M-Lok shroud but it would not budge. I removed the 2 set screws and the 3 tightening screws. Both sets are located near the rear of the shroud. Is there anything I am missing here as to why it won't come off?
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Old October 19th, 2020, 03:06 PM #2
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Loctite?

Try some heat.
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Old October 19th, 2020, 03:49 PM #3
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Don't know if there is any Loctite on but I will try heat.
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Old October 19th, 2020, 03:50 PM #4
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Red Locktite or blue? As Pinecone suggested, heat. Torch or heatgun.
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Old October 19th, 2020, 04:00 PM #5
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Rocksett is clear, and would need a hot water bath to soften it.
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Old October 19th, 2020, 04:08 PM #6
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I think he means handguard not shroud. If I am wrong, sorry but...

The handguard will not have any Loctite or Rocksett.
I had one where I had to put the screws in backwards to spread apart where the handguard goes over the barrel nut to remove it.

OP - A picture would really help to understand if its a barrel shroud or handguard you are trying to remove.
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Old October 19th, 2020, 04:57 PM #7
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Quote:
Originally Posted by hosspower View Post
I think he means handguard not shroud. If I am wrong, sorry but...

The handguard will not have any Loctite or Rocksett.
I had one where I had to put the screws in backwards to spread apart where the handguard goes over the barrel nut to remove it.

OP - A picture would really help to understand if its a barrel shroud or handguard you are trying to remove.
You would think that and you would be wrong. I had RRA carbine with a YHM freefloat on it that was red Locktited on.
After Dremeling the steel back-band off(which was also Locktited on instead of Aeroshelled), it took a torch and a pipe wrench to remove the rest of it.
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Old October 19th, 2020, 05:02 PM #8
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Quote:
Originally Posted by outrider58 View Post
You would think that and you would be wrong. I had RRA carbine with a YHM freefloat on it that was red Locktited on.
After Dremeling the steel back-band off(which was also Locktited on instead of Aeroshelled), it took a torch and a pipe wrench to remove the rest of it.
Wow! Shows what I know (or don't). There doesn't seem to be a reason to do it like that unless the tolerances were poor and they were using the Loctite as a Bandaid. I would not expect YHM to have poor tolerances.
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Old October 19th, 2020, 05:14 PM #9
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Quote:
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Wow! Shows what I know (or don't). There doesn't seem to be a reason to do it like that unless the tolerances were poor and they were using the Loctite as a Bandaid. I would not expect YHM to have poor tolerances.
First time for everything maybe. That was the last AR I bought. That was back in the '90s. After that, I built my own.
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Old October 19th, 2020, 05:28 PM #10
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I'm pretty sure there are some older handguards that called for locktite during install. IIRC, older vtacs were one. If I ever get a stubborn one, i always try a torch first.
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