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Posted: 8/13/2023 3:29:37 PM EDT
[Last Edit: CPT_CAVEMAN]
So I'm finishing up my galil build and the next step is installing my gas block. Just to make sure things matched up I measured the diameter of my barrel and gas block. It looks like the gas block is about .003 smaller than the barrel. .631 for the block and .634 for the barrel.
Is this difference to much to press the block on, and if so what's a good way to reduce the barrel? Was thinking sandpaper. |
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Posted: 8/13/2023 3:50:12 PM EDT
[#1]
I have a machinery handbook at work and would need to check but I think under a thousandth if not using temperature fit. Why not bore the gas block instead of turning down the bbl? I would do the bbl on a lathe but you can get away with the gas block using a drill or brake cylinder hone.
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Posted: 8/13/2023 6:52:46 PM EDT
[#2]
Quote HistoryOriginally Posted By OG1: I have a machinery handbook at work and would need to check but I think under a thousandth if not using temperature fit. Why not bore the gas block instead of turning down the bbl? I would do the bbl on a lathe but you can get away with the gas block using a drill or brake cylinder hone. I think that might be too much to take off the gas block only, but might do 50/50 or at least take some off both. |
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OR, USA
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Posted: 8/14/2023 4:31:33 PM EDT
[#3]
I'd be happy with 0.0005-0.001 interference. I'd pull it off the barrel.
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Posted: 8/15/2023 5:48:04 AM EDT
[#4]
Quote HistoryOriginally Posted By Deerhurst: I'd be happy with 0.0005-0.001 interference. I'd pull it off the barrel. Ya that's kinda what I'm doing. I'm gonna sand some of the gas block to smooth it up, but that's about it. Thanks for the measurements guys, I'll try to get it around .001 or less and see what I get. |
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OR, USA
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Posted: 8/15/2023 2:49:46 PM EDT
[#5]
Quote HistoryOriginally Posted By CPT_CAVEMAN: Ya that's kinda what I'm doing. I'm gonna sand some of the gas block to smooth it up, but that's about it. Thanks for the measurements guys, I'll try to get it around .001 or less and see what I get. If it's a little tighter than you want freeze the barrel and just before install heat the gas block. I've had to do that a few times. Works well. |
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Posted: 8/26/2023 12:36:03 PM EDT
[#6]
Thanks guys, went on pretty easy with the tothtool population tool. I just stacked up some washers infront of it and used 3ft rods.
What's a good way to install the magazine catch pin? I was thinking some ball bearings and a c-clap or vise. |
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