AUG Gas Piston Spring......WHY? - Page 1

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[ARCHIVED THREAD] - AUG Gas Piston Spring......WHY?

Posted: 8/15/2017 9:42:13 PM EDT

This has perplexed me from day one...I have to be missing something.

AUG piston setup....not much different than an M14 or an AR-18. All have a piston within a cylinder. The AR-180 and the M14 ( and a dozen others ) drive the piston back home with the op rod. Why does the AUG need a spring? The op rod works pretty much the same way.....

so.........WHY the piston spring?

Anyone ever run an AUG without it?

Posted: 8/15/2017 10:05:41 PM EDT

[#1]

They wanted to ensure it would be in the forward position when removing/installing the barrel assembly.
As long as that happened, it'd be fine without it.

Posted: 8/15/2017 10:10:08 PM EDT

[#2]

Quote History

Quoted:
They wanted to ensure it would be in the forward position when removing/installing the barrel assembly.
As long as that happened, it'd be fine without it.

View Quote

A-HA!!!! Makes perfect sense!!!!!

Thank you, kind Sir!!!!

Posted: 8/15/2017 11:19:56 PM EDT

[#3]

What's more interesting is why the barrels come threaded in M13x1 despite the fact that the barrel is made here.

Posted: 8/15/2017 11:34:20 PM EDT

[#4]

Because that's how Steyr wants them threaded.

I'm glad they finally made 1:7 twist barrels.

Quote History

Quoted:
Thank you, kind Sir!!!!

View Quote

You're quite welcome, sir.
Makes me wonder if the Thales/Lithgow F90 has a piston return spring.

Posted: 8/16/2017 7:50:59 AM EDT

[#5]

Quote History

Quoted:
What's more interesting is why the barrels come threaded in M13x1 despite the fact that the barrel is made here.

View Quote

Same reason most Glocks are threaded metric even though they're made here. Same with P226 factory barrels.

Posted: 8/16/2017 9:55:39 AM EDT

[#6]

Quote History

Quoted:
They wanted to ensure it would be in the forward position when removing/installing the barrel assembly.
As long as that happened, it'd be fine without it.

View Quote

Exactly. It's necessary due to the necessary rotation of the barrel for installation and removal. The SCAR gas system, which is AUG inspired does not require a piston spring because barrel removal and installation is coaxial to to the length of the receiver.

Posted: 8/16/2017 12:10:08 PM EDT

[#7]

Quote History

Quoted:

Same reason most Glocks are threaded metric even though they're made here. Same with P226 factory barrels.

View Quote

How many pistols are threaded vs. how many rifles are threaded to accept a muzzle device?

Posted: 8/16/2017 1:36:59 PM EDT

[#8]

Quote History

Quoted:

How many pistols are threaded vs. how many rifles are threaded to accept a muzzle device?

View Quote

Does it matter?

Posted: 8/17/2017 4:42:26 PM EDT

[#9]

Quote History

Quoted:

Does it matter?

View Quote

To somebody that realizes how many muzzle devices are sold, yeah.

Posted: 8/17/2017 7:35:25 PM EDT

[#10]

Quote History

Quoted:

To somebody that realizes how many muzzle devices are sold, yeah.

View Quote

More and more pistols are having a threaded option all the time. Most of the major polymer guns have one option or another. Aluminum guns such as Sigs and Berettas, too. Wasn't that long ago that you had to jump through a few hoops to get a can ready ( or device ready ) barrel.....not so much anymore. It's getting more straightforward every day.

[ARCHIVED THREAD] - AUG Gas Piston Spring......WHY?

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