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  #1  
Old 04-26-2010, 10:54 AM
steve_77 steve_77 is offline
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Question question muzzle attachment AR : legal low noise oll build

In CA no "flash hiders" are allowed but i find the avail brakes to be very loud and not suitable for use without hearing protection, would be nice if there was a way to have a AR barrel made with a proper target crown, say get a 18" barrel and have it re-cut and crowned at say 16.5" - is this possible?

Or can one simply place a fixed nut on the threads and be done with it? Ive heard about some "Levang Linear Muzzle Brake" - dpms - but someone said they didn't think this was legal in CA - as the scum at atf might say its a flash hider. Looking for ideas for a legal CA build -- want to keep the noise levels down so that i can use it for hunting purposes.

there was a guy at the rang e the other day with a canister looking thing - thought he said it was a ps7 or something - it was loud but sound not re-directed back to shooter but forward - (wasn't a suppressor)

what are the options here to satisfy CA law. Would seem pretty hard and $$ to re-crown an m4 barrel and still meet legal length requirements.
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Old 04-26-2010, 11:08 AM
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Originally Posted by steve_77 View Post
Or can one simply place a fixed nut on the threads and be done with it?
Yes, you could use something like this.
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Old 04-26-2010, 11:49 AM
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Wow cool... im sure they had some thing like this... but what about installation
it stil;l has to be put on with silver solder correct?

Sorry if these questions seem elementary but most OTC uppers have a FH or brake - so, assuming one already has a brake/flash hider on -- would it be easy to remove said brake and install this thread protector thing (can anyone do that or is special equipment needed)?
- steve
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Old 04-26-2010, 11:57 AM
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I use the smooth one rather than knurled. I got it at riflegear also. Link.

It does not have to be permanently attached, of course your barrel must be at least 16". I just put mine on very hand tight, or with a little help from pliers so long as you cushion the jaws. It won't move. Just keep your muzzle brake and a crush washer around and you can swap it out in minutes.

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Last edited by DougJ; 04-26-2010 at 12:01 PM..
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Old 04-26-2010, 3:31 PM
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Hmm... nice rifle the un-knurled version looks much better - still curious though - i know CA law are beyond ridiculous, but how come FH's & Brakes have to be permanently attached w/ silver solder while the thread protector doesnt? just dont want/need any problems....
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Old 04-26-2010, 3:38 PM
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Originally Posted by steve_77 View Post
Hmm... nice rifle the un-knurled version looks much better - still curious though - i know CA law are beyond ridiculous, but how come FH's & Brakes have to be permanently attached w/ silver solder while the thread protector doesnt? just dont want/need any problems....
They do not need to be permanently attached unless your barrel is less than 16" long, then you have to permanently attach your muzzle device to bring the length to at least 16".
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Old 04-26-2010, 10:09 PM
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Flash suppressors are NOT banned.
They are considered an evil feature though.
If your gun is built with a bullet button, flash suppressors are fine.

If you are building a featureless gun, then you need to avoid flash suppressors.

Threaded barrels on rifles are fine.
Permanent attaching is only done to get barrels under 16" to be over 16" long.
If you don't want anything on the muzzle, a barrel can be cut down and crowned as long as it's still at least 16" long.
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Old 04-26-2010, 11:24 PM
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I'm not too sure if I understand what you guys are talking about, but I was going to start a thread like this. I know someone who told me that there was a good place to do distance shooting during hunting season. He has a really long flash hider on his gun and he said it's almost like a silencer and takes a little bit of the noise away. It looks just like a long flash hider. He said it's legal, and he doesn't get in so much trouble from the loud gun noise. I was just wondering if it's OK to have these things?
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Old 04-26-2010, 11:40 PM
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Quote:
Originally Posted by 2Cute2Shoot View Post
I'm not too sure if I understand what you guys are talking about, but I was going to start a thread like this. I know someone who told me that there was a good place to do distance shooting during hunting season. He has a really long flash hider on his gun and he said it's almost like a silencer and takes a little bit of the noise away. It looks just like a long flash hider. He said it's legal, and he doesn't get in so much trouble from the loud gun noise. I was just wondering if it's OK to have these things?
If the rifle in question either is a registered AW (assault weapon) or is an OLL equipped with a magazine lock, a flash hider is OK. A flash hider doesn't reduce the sound produced by firing; if it did, it would be a suppressor and illegal to possess in CA without permission that most of us can't obtain. A flash hider redirects and/or disperses muzzle blast in order to make the shooter harder to spot on the battlefield which could, I suppose, seem quieter to the shooter.

If the rifle is a "featureless" OLL, than a flash hider is NOT OK. A muzzle brake is; most muzzle brakes, in my experience, make muzzle blast louder for the shooter but can reduce recoil and/or muzzle lift when firing.

The "flow chart" probably does a better job of explaining this than I just did.
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Last edited by Grumpyoldretiredcop; 04-26-2010 at 11:43 PM..
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Old 04-27-2010, 6:47 PM
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so, what's the physical difference between brake and flash-hider?
Output hole diameter?
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Old 04-27-2010, 7:35 PM
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Brake dampens recoil, flash hider just hides the flash.
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Old 04-27-2010, 8:26 PM
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Originally Posted by 77bawls View Post
Brake dampens recoil, flash hider just hides the flash.
we all know that, what's the physical difference, diameter, exit hole? or they are not comparable design wise, apple and oranges?

looks like flash hide has wide open exit home, while compensator or muzzle brake has small one

Last edited by igorts; 04-27-2010 at 8:44 PM..
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Old 04-28-2010, 12:08 AM
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Quote:
Originally Posted by igorts View Post
we all know that, what's the physical difference, diameter, exit hole? or they are not comparable design wise, apple and oranges?

looks like flash hide has wide open exit home, while compensator or muzzle brake has small one
Apples and oranges.

Brakes generally have baffles and side openings to re-direct the flow of gas outward/upward.
The baffles necessitate a small opening at the front for only the bullet to exit.

Flash suppressors have long slotted/angled side openings to draw air INTO the flash suppressor and extinguish the flames.
The large open front helps the air flow like a venturi that can spin the flame to help extinguish it.
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  #14  
Old 05-04-2010, 9:29 PM
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I was told a flash suppressor hides the flash from the shooter, So they can fire at night without being blinded. It doesn't hide the flash from the target.
T or F?

Either way, I'm keeping my A2. Brakes are just too loud.
One more question. Why does CA call the A2 a flash hider and the Military consider it a compensator?
I'm expecting to read "Because CA sucks." Please be more to the point. Or is this the only answer...

Last edited by diginit; 05-04-2010 at 9:44 PM..
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