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Posted: 11/16/2003 3:31:56 PM EDT
During a trip to the range today I was
told by a bystander that my shooting of an
AR15 would "burn out the gas tube".

I was shooting a BushMaster 16" Dissipator upper, and using aimed fire to go through a
30-rd. mag. in about 2 minutes.

Given that the rifle was originally designed
as a machine gun, and most manuals I've seen
list the SUSTAINED rate of fire as 12-15 rds.
per minute, I didn't put much stock in what he
said. However, I'm willing to learn from those
who know more than I--is there any validity to
what he said? Thanks.

Link Posted: 11/16/2003 3:39:43 PM EDT
Maybe it was all that cheap ammo you were shooting, [:K]!!!
Link Posted: 11/16/2003 3:41:21 PM EDT
I've done 2 back to back beta dumps (F/A 200 rounds) before and failed to melt the gas tube. Rumor has it that it fails during the third Beta. I didn't go that far. I have melted my gas rings before. [:D]
Link Posted: 11/16/2003 3:44:16 PM EDT
My two cents, if they're made to handle full auto in the military version, I don't see how semi "would burn it up". But I'm not a gunsmith. by the way don't listen to markm. He's just some nob posting negative garbage. He's probably some lib.
Link Posted: 11/16/2003 3:53:12 PM EDT
What frisco says is correct.
Link Posted: 11/17/2003 2:05:32 AM EDT
If you keep shooting that way you will burn out your barrel before your gas tube.
Link Posted: 11/19/2003 4:40:05 PM EDT
In eight years of Army and USAR seevice, I've never seen a gas tube burn out. We also never cleaned them either. It's an urban legand.
Link Posted: 11/20/2003 6:10:54 PM EDT
I would think that if this was a problem, they would have seen it in vietnam and corrected the problem. I have fired a bunch of 30 rd mags, 8+, as fast as I can pull the trigger and it has never effected my bushmaster.
Link Posted: 11/21/2003 7:27:06 PM EDT
What a stupid statement. Some people grasp at straws to sound smart I swear.
Link Posted: 11/22/2003 10:26:30 AM EDT
[Last Edit: 11/22/2003 10:29:13 AM EDT by Mikes_Basement]
In my own experience, I had my M16 at a night shoot and I fired 3 or 4 30rd mags of tracer back to back, then fired off a Beta-C mag. I was shooting at aerial targets with fairly long bursts (maybe 10rds or so per burst). The gas tube was glowing cherry red, but it did not fail. I let it cool down for a few minutes then continued firing without any problems. I have seen a couple of gas tubes that have failed so I know it can happen; although, I saw them after they had been removed from the weapons and I don't know under what circumstances they failed. I guess they were either defective, or were abused even worse than I abused mine.
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