Disassemble free float tube handguard - Page 2

tangolima · November 13, 2024, 10:55 AM

Good idea. I have a big bottle of that stuff. Will start today.

-TL

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tangolima · November 14, 2024, 02:10 AM

Victory!

I finally took out the GB. Kroil, gunzilla, heat, and clamping the barrel in vise and pound the GB with big brass punch and hammer. It finally started moving.

What locked the GB in place wasn't carbon, but some sort of sealant. The white stuff on the journal. That Grendel guy is indeed a lunatic.

The war is over. Time to rebuild. Thank you guys for your help!

-TL

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tangolima · November 14, 2024, 05:46 AM

Ok this one is weird. The GB journal has diameter of 0.905". I didn't know such dimension existed.

The upper is a thermal fit to the barrel extension. I have to heat the receiver pretty warm to install the barrel. I still need gas tube. The new aluminum free float handguard fit over the over sized GB a bit too closely to my liking. I don't have much confidence it not touching the GB under all circumstances. So I'm going to file the inside ribs a few thous off on all sides to have more clearance.

-TL

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jcj54 · November 14, 2024, 01:41 PM

Glad you got it apart. Good luck on your project.

tangolima · November 14, 2024, 03:22 PM

I'm glad I didn't go nuclear to slice the GB. It would be difficult to find replacement because of the unconventional ID of 0.905".

-TL

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tangolima · November 16, 2024, 07:18 PM

Another weird thing about the barrel. The muzzle thread is 9/16x24, so I have no choice but to keep the original comp. The barrel must have had shot no less than 5k rounds. It still shoots well though.

-TL

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10-96 · November 19, 2024, 12:02 PM

Tangolima- They're a little on the spendy side, but I've bought oddball thread size muzzle attachments from Witt Machine and Tool Co.

tangolima · November 19, 2024, 06:37 PM

Quote:

Originally Posted by 10-96

Tangolima- They're a little on the spendy side, but I've bought oddball thread size muzzle attachments from Witt Machine and Tool Co.

Thanks. I found thread adapters, so that door is open.

-TL

Sent from my SM-N960U using Tapatalk

November 14, 2024, 02:10 AM	#27
tangolima Senior Member Join Date: September 28, 2013 Posts: 5,122	Victory! I finally took out the GB. Kroil, gunzilla, heat, and clamping the barrel in vise and pound the GB with big brass punch and hammer. It finally started moving. What locked the GB in place wasn't carbon, but some sort of sealant. The white stuff on the journal. That Grendel guy is indeed a lunatic. The war is over. Time to rebuild. Thank you guys for your help! -TL Sent from my SM-N960U using Tapatalk Last edited by tangolima; November 14, 2024 at 02:39 AM.

November 14, 2024, 05:46 AM	#28
tangolima Senior Member Join Date: September 28, 2013 Posts: 5,122	Ok this one is weird. The GB journal has diameter of 0.905". I didn't know such dimension existed. The upper is a thermal fit to the barrel extension. I have to heat the receiver pretty warm to install the barrel. I still need gas tube. The new aluminum free float handguard fit over the over sized GB a bit too closely to my liking. I don't have much confidence it not touching the GB under all circumstances. So I'm going to file the inside ribs a few thous off on all sides to have more clearance. -TL Sent from my SM-N960U using Tapatalk Last edited by tangolima; November 14, 2024 at 05:54 AM.

November 19, 2024, 12:02 PM	#32
10-96 Senior Member Join Date: October 19, 2005 Location: Tx Panhandle Territory Posts: 4,190	Tangolima- They're a little on the spendy side, but I've bought oddball thread size muzzle attachments from Witt Machine and Tool Co. __________________ Rednecks... Keeping the woods critter-free since March 2, 1836. (TX Independence Day) I suspect a thing or two... because I've seen a thing or two.

November 13, 2024, 10:55 AM	#26
tangolima Senior Member Join Date: September 28, 2013 Posts: 5,122	Good idea. I have a big bottle of that stuff. Will start today. -TL Sent from my SM-N960U using Tapatalk

November 14, 2024, 01:41 PM	#29
jcj54 Senior Member Join Date: February 28, 2011 Posts: 280	Glad you got it apart. Good luck on your project.

November 14, 2024, 03:22 PM	#30
tangolima Senior Member Join Date: September 28, 2013 Posts: 5,122	I'm glad I didn't go nuclear to slice the GB. It would be difficult to find replacement because of the unconventional ID of 0.905". -TL Sent from my SM-N960U using Tapatalk

November 16, 2024, 07:18 PM	#31
tangolima Senior Member Join Date: September 28, 2013 Posts: 5,122	Another weird thing about the barrel. The muzzle thread is 9/16x24, so I have no choice but to keep the original comp. The barrel must have had shot no less than 5k rounds. It still shoots well though. -TL Sent from my SM-N960U using Tapatalk