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Posted: 5/3/2021 9:45:25 AM EDT
[#1]
The pins are generally the hard part.
Have you tried rotating the FSB on the barrel back and forth (R to L to R to L) a few times to knock down the burrs? A bit of oil helps as well. ETA: Yes, you might need to remove the gas tube, and if the rifle is well-used YES it can be a bitch without the proper punches. |
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Posted: 5/3/2021 10:23:28 AM EDT
[#2]
Cook it. Shooting will build up residue at the gas port/gas block junction which can act like glue. If you can put it in a freezer for a couple hours before hand all the better. The FSB should expand slightly before the barrel warms up when you hit it with the torch.
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Posted: 5/3/2021 11:06:54 AM EDT
[#3]
So far it’s had enough rounds through it for zeroing. I’ve tried to hammer with the rubber mallet left to right and right to left but the taper pin holes still are aligned. I’ll remove the gas tube and throw the upper in the freezer. Thanks for the help, I’ll report back with findings.
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Posted: 5/3/2021 11:14:09 AM EDT
[#4]
Heat up the gas block with a propane torch, and try to avoid the barrel as much as possible, then spray WD40 or Kroil or similar penetrant right around the barrel interface, then give it a few good whacks with the dead blow.
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Posted: 5/3/2021 11:27:03 AM EDT
[#5]
Heat and beat. It'll go.
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Posted: 5/3/2021 2:42:13 PM EDT
[#6]
Ditch the rubber, have zero cares if it scratches and knock it lose with a hammer. If you want to play it safe, use a brass drift close to the base.
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Posted: 5/5/2021 9:01:03 AM EDT
[#7]
Heat and beat.
I generally dislike deadblows unless it’s something fragile that I don’t want a nick or scratch on. A good 2-4lb brass hammer is a good beating iron without going full retard in the destruction department. |
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Posted: 6/20/2021 1:23:55 AM EDT
[#8]
After some time in the freezer and a torch it came off pretty easily with the rubber mallet. Thanks all.
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Posted: 6/20/2021 8:10:29 AM EDT
[#9]
For others. A block of wood and decent steel hammer blow from the rear should easily loosen the fsb.
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Posted: 6/20/2021 8:46:42 AM EDT
[#10]
Sometimes its just the burrs from drilling the taper pin holes holding shit up. Expanding the FSB with heat usually does the trick.
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