Small Arms Solutions video: "The Buffer - Theory and when to Use What Buffer"

[scottryan]

Saying just match the buffer weight to barrel profile is such limited thinking. By saying that you pretty much sending people down the wrong road in the regards how they should buffer their guns. As evidenced by the OP's first post.

Recommending a heavy buffer to cure an overgassed gun is also sending someone down of the wrong road.

[ViniVidivici]

Because the bolt velocity on a rifle is lower than that of a carbine. It does not impact the chamber extension with such force.

Furthermore, these people running rifle length heavy barrels are not running them in full auto. Bolt bounce isn't much of an issue in semi auto.

Awesome, thank you. I'm always learning. So in that application, there would be no reason to go to a heavier buffer, when things run smooth, brass is coming out around 3-4 o'clock? As in "don't fix what ain't broken"?

[vicious_cb]

Recommending a heavy buffer to cure an overgassed gun is also sending someone down of the wrong road.

What about the venerated 6920? Clearly not overgassed but many on this board would recommend using an H2 buffer even though factory spec'd it ships with an H1.

[TomMcC]

Recommending a heavy buffer to cure an overgassed gun is also sending someone down of the wrong road.

Question...how would you go about dealing with an over gassed gun? Re-barrel with the proper port? Adjustable gas block? Other options?

[MistWolf]

What about the venerated 6920? Clearly not overgassed but many on this board would recommend using an H2 buffer even though factory spec'd it ships with an H1.

In my experience, changing buffer weights should be done to fine tune a properly gassed AR.

Question...how would you go about dealing with an over gassed gun? Re-barrel with the proper port? Adjustable gas block? Other options?

Change barrels, install a BRT Micro Tune kit or use an SLR adjustable gas block.

[Hammer_Man]

None of this would be an issue if we would just stick to 20" barrels with 12" gas systems, just as Eugene Stoner the patron saint of direct impingement intended.

[Straight Shooter]

In my experience, changing buffer weights should be done to fine tune a properly gassed AR.


Change barrels, install a BRT Micro Tune kit or use an SLR adjustable gas block.

What I did on a very gassy LMT 16" carbine 10 years or more ago: Swapped the semi-bcg for full auto...installed a RED chrome-silicon recoil spring from Sprinco & stepped up the buffer one notch. And finally- added a VG6 muzzle brake. Been a 100% flawless rifle that stays dead straight during firing, and recoils like a purring kitten.

[scottryan]

Question...how would you go about dealing with an over gassed gun? Re-barrel with the proper port? Adjustable gas block? Other options?

Best option is to rebarrel. I have been extremely picky lately with my most current builds on what barrel I select.

Secondly, if rebarrel was not an option, I would install a BRT gas tube with reduced port.

I have also used factory Noveske barrels with factory pinned switchblocks if a long handguard is not required.

I will not use an adjustable gas block (or any gas block) with set screws.

I have also found on overgassed guns, going to a heavier buffer basically doesn't solve anything. It will not eliminate premature extraction. It will not eliminate case head swipe. And then it causes short stroking when the buffer gets too heavy.

[AndyLate]

Question...how would you go about dealing with an over gassed gun? Re-barrel with the proper port? Adjustable gas block? Other options?

I'm not Scottyryan.

I did, however, install a .060 BRT Custom Tune Gas Port in the FSB of a seriously overgassed 16" carbine with excellent results.

It still locks open on an empty magazine running an H2 buffer, but I live in Alabama, so no cold weather testing here.

Andy

[17K]

No no no.

You need a special color super tactical spring and homemade mix of tungsten and steel weights to get a big window.