16" with Rifle-Length Gas

[IPSICK]

I guess I don't contribute enough for you already.
Have you seen all my stickied threads and tech articles?

In general, low dwell barrels run best in the following conditions:
Full power ammo, especially with heavier bullets that go slower and increase dwell time.
Well used bolt carrier and receiver.
Good lubrication.
Warm weather.
Carbine buffer and spring, (lighter weight buffers and well used springs are best)
Back pressure increasing muzzle devices such as sound suppresses, krink muzzle brakes or similar.
Well used metal lipped magazines.

Can you give us a little more detail on what you're talking about? The post above is a little ambiguous.

[ar15barrels]

Can you give us a little more detail on what you're talking about? The post above is a little ambiguous.

I think you should take up idpa.

[IPSICK]

I think you should take up idpa.

Is IDPA an additional condition where a 16" barrel will work with a rifle length gas system? Maybe the additional pressure of a competition format with highly nuanced rules will allow it to run reliably.

Btw, not sure if you realized my sarcasm using your post was directed at the OP. A little google-fu by the OP would have resulted with info showing the futility of trying a 16" barrel and rifle length gas system. One "might" be able to get it to run reliably. But as you've noted, there are many conditions to consider to get it there. More trouble than it's worth especially when 3-gun smiths who shoot a butt ton of rounds in competition have experimented with this setup and found it too unreliable to be competitive.

I guess if one really wanted to try a longer gas system with a 16" barrel, one could try Noveske's intermediate length which they use with their 18" barrel. The shortest barrel I've heard used reliably with rifle gas is a 17" barrel.

[MXRider]

http://www.idpa.com/

[FatalKitty]

My rifle lengthed 16" is not picky... it WILL run wolf ammo and I have video of me shooting wolf rapidly with zero issues.
in fact I have lots of videos of my Dissy... maybe I should post more so that people can see them in real action and no speculate.

WRONG.

Proper "Dissipator" designs use either "carbine position" or "middy" (midlength) position gas taps.

While there may be a traditional front sight/gas block assembly on "Dissy" guns, the gas tap is not used in this position and a low-profile gas tap is used further back under the handguard or rail system.

When hacking around with a 16" bbl using a rifle-position gas tap - i.e., where a 20" A2 barrel is cut down/recrowned to 16" - there is very little 'dwell time' to build proper gas presusre since the end of the barrel is just a short distance (and thus time) from the rifle-position gas tap.

These hack setups often do not cycle properly - and then the individual tries to widen the gas port for more pressure to compensate for the short dwell time. Eventually it can kinda work, but it's very harsh/sudden at best even if it happens to have some moderate reliability. Many end up over-opening the gas port just to get it to function 100% and then it's a very very HARSH cycling.

You will never see a quality rifle/upper vendor sell a 16" bbl with a rifle-position gas tap.

Quality Dissipator uppers will have a carbine position or midlength position (btwn carbine & rifle gas tap placement) gas tap. Again the A2 front sight bases on Dissy configurations are used only for sighting and the gas tap is somewhat to the rear of it.

is that a fact now?

Addax, CMMG, and others currently manufacture barrels with this very configuration. in fact - I own them... and they ARE quality barrels with a lifetime waranty that are both accurate and very smooth shooting.

normally you have a lot of good information, but you have poor delivery and come off as an jerk quite naturally

maybe check out my Dissipator thread

http://www.calguns.net/calgunforum/showthread.php?t=493277&highlight=dissipator

[MXRider]

So ADDAX and CMMG. I agree with Randall's conclusion that no quality vendor makes a 16" rifle gas barrel for the reasons he already listed.

[Rorge Retson]

It is interesting that all of these people who have likely never seen a rifle-length gas 16" AR know so much about them....they come into my thread, crap all over it, then start (like Mr. Wolf said in Pulp Fiction) s***ing each other's d***s in their superiority over all of us little peons here in Know-Nothing Land.

Tell you what - New Rule of the Thread - you MUST have DIRECT EXPERIENCE with the configuration in question - meaning IN YOUR HANDS AND PULLING THE TRIGGER - otherwise, you may not post, and must go elsewhere to take a dump. Okay?

That should thin out the herd a bit. (though I'm not holding my breath....the same dipsticks who thread-crap also suffer from extremely poor reading comprehension).

[MXRider]

Seriously, Randall, aka ar15barrels, chimes in and gives his sound advice and personal opinions, and you act like he has no idea what he is talking about. LOL

[FatalKitty]

that's it. Making a video in FULL detail. you people crack me up.

NO ONE in their right mind would EVER tell you that a rifle gassed 16" bbl is the best option or even a really good option for ANYTHING other than that yes, it does work and works well.
for someone who doesn't own an AR I would NEVER recommend one for them.

However, all the people saying it's a ****ty design and doesn't work or doesn't exist in the real world... flat out wrong.

Time to dust off my chrono, get up to Nevada and do some shooting with the video camera so y'all can at least get some real world experience (heck, I shoot like 5k rounds a month I'm sure I can offer you guys some insight) and stop relying on people that have a hard-on for burning someone's idea down. I really don't know why bwiese insists on trying to explain to EVERYONE how ****ty a rifle gassed 16"bbl is... but he does it every chance he gets.

I will be the first to tell you that it is not the best design, or even the right design. it originally wasn't even supposed to exist. However - it does work, I know that because I own one.

[ivanimal]

[U]New Rule of the Thread

Everybody shut up!