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1/16/2020 9:48:49 PM
Posted: 9/17/2009 8:20:58 AM EST
Has anyone tried a Pigtail Gas Tube from Brownells? I have a 16" carbine with the short, carbine length gas tube, but I have cycling issues with mildly hot ammo. I am intrigued by this Pigtail gas tube:

http://www.brownells.com/.aspx/pid=1591/Product/AR_15_M16_PIGTAIL_GAS_TUBE

Anyone have any experience with it?

Thanks.

––Sam
Link Posted: 9/17/2009 8:45:43 AM EST
What cycling issues?

You'd be better off changing buffers, IMHO.

If you're in Tucson, I'd be happy to take a look at your rifle and maybe try to troubleshoot.
Link Posted: 9/17/2009 8:59:37 AM EST
Gimmick. To actually make a change in the gas system you'd have to change the location of the gas port. Having a slightly longer gas tube without changing anything else isn't going to make an appreciable difference.
Link Posted: 9/17/2009 9:16:49 AM EST
Originally Posted By JoshAston:
Gimmick. To actually make a change in the gas system you'd have to change the location of the gas port. Having a slightly longer gas tube without changing anything else isn't going to make an appreciable difference.


+1... Best solution to pressure-related carbine problems is to sell the carbine upper and buy a midlength. Cheapest bandaid is to add a heavier buffer (e.g. 9mm) and/or an MGI adjustable gas tube. Explaining the problems you are having will help us help you.
Link Posted: 9/17/2009 10:02:31 AM EST
Use a Wollf extra power spring and T2 buffer.
Link Posted: 9/17/2009 4:59:16 PM EST
Sorry for the dearth of details. On certain ammo, IMI for example, I get a lot of blown primers and smokestack jams. It is a CCMG built upper. I called them and they said to use less potent ammo. Doesn't sound right to me. I should think that a quality upper should be able to digest virtually all reasonable ammo.

Thanks for your suggestions.

––Sam
Link Posted: 9/17/2009 5:05:03 PM EST
Hotter ammo should cyccle fine..usually theres problems when ammo is under powered, in any event we cant help you unless you state what the nature of the cycling problem is..is it short stroking,FTF,FTE what exactly is the malfunction.
Link Posted: 9/17/2009 6:46:41 PM EST
[Last Edit: 9/17/2009 6:48:47 PM EST by badazzar15]
Link Posted: 9/17/2009 8:38:51 PM EST
I would also say that the chamber may be too tight and in need of reaming...
Link Posted: 9/17/2009 11:25:09 PM EST

Originally Posted By Sam650:
Sorry for the dearth of details. On certain ammo, IMI for example, I get a lot of blown primers and smokestack jams. It is a CCMG built upper. I called them and they said to use less potent ammo. Doesn't sound right to me. I should think that a quality upper should be able to digest virtually all reasonable ammo.

Thanks for your suggestions.

––Sam

Blown primers are not a cycling problem.
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