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Posted: 12/8/2020 10:37:12 AM EST
I've got a 300BLK that I've used for years with both supersonic and subsonic ammo. It's starting to not cycle reliably with subsonics, and I'm wondering if the gas tube or block has developed significant fouling. Is there any maintenance that can be done (other than blowing it out with a mag dump of high-pressure supers)?
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Posted: 12/8/2020 10:45:04 AM EST
[Last Edit: 12/8/2020 10:46:01 AM EST by tweeter]
just use the supers, it can't hurt anything
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Posted: 12/8/2020 10:58:46 AM EST
I had a buddy bring me his that would not cycle, I removed the tube and could not blow through it with my mouth so put the compressed air to it and a chunk of carbon (I assume) shot out like a bullet. Only one time I have ran into this but it can happen.
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IL, USA
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Posted: 12/8/2020 11:13:45 AM EST
I spray the tube out every so often with carb cleaner.
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USA
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Posted: 12/8/2020 7:27:05 PM EST
[Last Edit: 12/8/2020 7:27:36 PM EST by ColtRifle]
Quote HistoryOriginally Posted By SScot: I had a buddy bring me his that would not cycle, I removed the tube and could not blow through it with my mouth so put the compressed air to it and a chunk of carbon (I assume) shot out like a bullet. Only one time I have ran into this but it can happen. I’ve had a partially blocked gas tube before. That’s why I keep spare gas tubes on hand. Likely faster to just replace it. |
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CT, USA
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Posted: 12/8/2020 10:17:05 PM EST
While at the range, Spray some carb cleaner down the tube and then work a section of wire down the tube, trying your best to scrape out the inside.
Load up a mag full of super sonic ammo and blast. If none of that works, replacing the tube is probably the best bet. |
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Posted: 12/8/2020 10:21:42 PM EST
Given the current cost and availability of ammo, od just replace the gas tube.
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Posted: 12/9/2020 9:25:05 AM EST
[Last Edit: 12/9/2020 9:25:32 AM EST by Rincoln]
Quote HistoryOriginally Posted By MJ11B4P: Given the current cost and availability of ammo, od just replace the gas tube. That is why I didn't just do the mag dump. I know it would likely blow anything out. But, if there was a "cheaper" alternative, I wanted to go that route. |
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Posted: 12/9/2020 9:31:49 AM EST
Quote History Originally Posted By Taskmaster86: While at the range, Spray some carb cleaner down the tube and then work a section of wire down the tube, trying your best to scrape out the inside. Load up a mag full of super sonic ammo and blast. If none of that works, replacing the tube is probably the best bet. This sounds like a great way to clean out the tube. I may have to give it a shot 
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Posted: 12/19/2020 11:43:41 PM EST
[Last Edit: 12/19/2020 11:45:26 PM EST by Exorpmtech]
Tube are like $10. If you're trying to clean it you might as well remove the tube and replace it at that point.
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Posted: 12/19/2020 11:44:48 PM EST
[Last Edit: 12/19/2020 11:45:00 PM EST by Exorpmtech]
double tap.
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Posted: 12/20/2020 2:40:36 PM EST
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