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Posted: 5/3/2011 10:39:28 AM EDT
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OK here is my problem. when, I got this particular upper the barrel did not have a gas port drilled, got that resolved, now after running a few rounds it is not ejecting and chambering a new round. replaced the entire bolt to see if that was the problem but didnt fix the problem, checked the buffer spring and thats not the problem. I am wondering if it is the gas tube.
Suggestions / recommendations? Thanks Ashton |
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I believe so, had Tony's custom uppers do the drilling for me at the gunshow. I have never heard of Tonys custom uppers. AndI have never been to a gunshow where vendors brought their own tooling to drill gas ports. Do you have pics of the barrel/gas block? Who assembled the gas system? Posted Via AR15.Com Mobile |
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...it is not ejecting and chambering a new round... can you elaborate at all? Does the bolt even try to cycle? or does it remain in the home position? assuming the gas port is the right size, is in the right place and isn't obstructed, I'd look at trying a different ammo. Maybe it's a .223 chamber and you are running 5.56, although I doubt that would cause this issue...but who knows. |
| If the gas port was made too large it will result in the gun being over gassed. This will cause failure to extracts. The extractor is trying to remove the case before chamber pressures have dropped, and the extractor jumps off the rim. Then the bolt picks up a new round and shoves it into the back of the empty case that is still in the chamber. Take a close look at your fired brass. Look for signs of damage to the rim. If it looks like the extractor is trying to rip the rim off the case then your gun is probably over gassed, and you need a new barrel. If it is not an over gas issue, then a HD extractor spring and o-ring might help. Like this: http://www.bravocompanyusa.com/BCM-Extractor-Spring-Uprade-Kit-p/bcm%20extractor%20spring%20upgrade.htm |
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If the gas port was made too large it will result in the gun being over gassed. This will cause failure to extracts. The extractor is trying to remove the case before chamber pressures have dropped, and the extractor jumps off the rim. Then the bolt picks up a new round and shoves it into the back of the empty case that is still in the chamber. Take a close look at your fired brass. Look for signs of damage to the rim. If it looks like the extractor is trying to rip the rim off the case then your gun is probably over gassed, and you need a new barrel. If it is not an over gas issue, then a HD extractor spring and o-ring might help. Like this: http://www.bravocompanyusa.com/BCM-Extractor-Spring-Uprade-Kit-p/bcm%20extractor%20spring%20upgrade.htm I am by far no expert or even experienced shooter, but the OP said the bolt wouldn't cycle. So if it is over gassed wouldn't the bolt cycle? If it's not cycling as he said hows he going to check the brass? |
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now after running a few rounds it is not ejecting and chambering a new round
I took this to mean that it was not ejecting the fired case, and then chambering a new one behind it. Maybe I misunderstood, so the OP will need to clarify that. Also, it says he ran a few rounds, so I would think there would be some to check |
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I believe so, had Tony's custom uppers do the drilling for me at the gunshow. That might be the problem right there. Tony has no business working on guns from what I have read about his products and his work. He sells misleading products to the unsuspecting too. |
| Tony has been working on guns for a real long time. He drilled the gas ports and sized the chambers on the hundreds of barrels he sells. Do I buy much from him? No. But he is more than capable of machining a barrel and installing a FSB correctly. From what I've seen his parts are mostly CMT with some YM chrome stuff. Funshow coming up next week. Take it back and tell him what is going on with it. There is a connection with Model 1 Sales, think it's owned by his ex-wife. Everybody always gives Spikes a second chance to make good on some of their questionable parts I say give Tony a second chance. He has a lot of happy customers also. It was running fine then started acting stupid! What kind of upper did you buy with no gas port? Just curious! |
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now after running a few rounds it is not ejecting and chambering a new round
I took this to mean that it was not ejecting the fired case, and then chambering a new one behind it. Maybe I misunderstood, so the OP will need to clarify that. Also, it says he ran a few rounds, so I would think there would be some to check ahhh. yeah you are probably right. Somehow I was thinking it never cycled properly...stupid stupid stupid. |
| I have bought stuff from Tony before and he is a good guy and knows his way around black guns if the barrel didnt have a gas port drilled I would have to suspect what else may be wrong with it. Let not kick a guy in the pants for trying to fix someone elses screw up! |
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I have bought stuff from Tony before and he is a good guy and knows his way around black guns if the barrel didnt have a gas port drilled I would have to suspect what else may be wrong with it. Let not kick a guy in the pants for trying to fix someone elses screw up! Lots of barrels are not drilled with a gas port if they are stripped. With so many piston guns on the market some mfgs are just selling bare barrels so the customer can drill whatever size port they need. I would not suspect the barrel had anything wrong with it before the hole was drilled. Posted Via AR15.Com Mobile |
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