Suppressors AAC DEFENDER back from haveing new end cap made

black_ump

Gunny Sergeant
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Jul 16, 2007
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Well with a little money floating around in my pocket I decided to have a new end cap made for my defender, the old one was ugly and domed shaped and worn, so I shipped it out to a place called "LRP".


When I shipped the can I included two sets of prints in which the machinist could pic from, one was a cap just like the AAC EVO the other as also like the evo but instead of rounded out side edges it had 45's I also wanted spanner wrench wholes drilled into but not all the way threw the cap.

When the guy took the end cap off he said the baffles fell right out, they where dirty as all hell and the blast and next baffle where highly eroded.

any way while he was cutting the end cap he sand blasted the baffles to clean them up the best he could, when the form 4 comes threw i will finish the rest or have up to date baffles made ( not sure which), but until then here are some before and after pix of the only take apart AAC DEFENDER that you will find ( that i know of )

thanks.

oh and ps sorry these are cell phone pix, and i wont be able to refinish the cap until the form 4 clears, feed back is welcomed


EDIT: wanted to add i have not shot it since this took place so i have no idea if cleaning them like he did will make a difference or not



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Re: AAC DEFENDER back from haveing new end cap made

You will see no difference in sound reduction in a slightly dirty baffle vs perfectly clean. You need some build up to really get peak suppression, in my time with them. They test them for constant usage.... your spinning your wheels on this one. Get it, shoot it, and don't worry about it so much. You're going to have a stroke worrying so much about the little things.
 
Re: AAC DEFENDER back from haveing new end cap made

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body">You will see no difference in sound reduction in a slightly dirty baffle vs perfectly clean. You need some build up to really get peak suppression, in my time with them. They test them for constant usage.... your spinning your wheels on this one. Get it, shoot it, and don't worry about it so much. You're going to have a stroke worrying so much about the little things.

</div></div>


I am glad you brought this up, how does a dirty suppressor get quieter then a clean one ? honestly the dirtier it gets the more volume that is lost, wouldnt their be a loss in sound reduction ? if dirty is the way to go then hell ill get some vary thin clay and pour it into my baffles and eat all the volume up so they get quieter.

iam not saying the above to be a smart ass in any way shape or form, iam simply asking because i dont see how thats possible.
 
Re: AAC DEFENDER back from haveing new end cap made

Dirty = Quiet
until you reach a cross over point in which sufficent volume and or change in internal geometry is reached
at that time,
Dirty = Loud
(Titsworth has a page dedicated to a study he did on this.)

Not an issue for high power centerfire suppressors though.
The pressure and heat that they have to endure dislodges and burns / blows the crud out after a sufficent amoount is accumulated.

Since you are using this with pistol ammo and I suspect that you will want to play around with running it wet, it will get dirty.
What is the point of getting your can converted to a take down if you don't take it apart for periodic cleaning right?

So, here in lies the rub.
The can will get quieter as it gets dirty, but if you let it get to dirty, you won't be able to break it down.
In you don't clean it, over time it will indeed fill up and get loud.
Albeit several thousand rounds later.
 
Re: AAC DEFENDER back from haveing new end cap made

Well, Dr.Phil just told you. I've told you numerous times.


STOP WITH THE OBSESSIVE CLEANING. Clean it every 500 rounds if you feel the need to.

Go read Titsworth site.
 
Re: AAC DEFENDER back from haveing new end cap made

KY, Titsworth site costs money, do you really think that cheap fuck is gonna splurge to read info when he can come here and ask his question and someone will tell him the answer but he wont listen anyhow.
 
Re: AAC DEFENDER back from haveing new end cap made

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Outsy</div><div class="ubbcode-body">KY, Titsworth site costs money, do you really think that cheap fuck is gonna splurge to read info when he can come here and ask his question and someone will tell him the answer but he wont listen anyhow. <span style="color: #33CC00">And then call them "jack asses"</span> </div></div>

That is a good point Outsy..... and I added in what you forgot to mention.

He will buy outdated accessories. But why should I search the internet for information when I can make an exclamation point post about the dumbest shit I can possibly accessorize my firearms with?! Because I am Black_UMP!!!!
 
Re: AAC DEFENDER back from haveing new end cap made

And in reality you are saying you altered the OUTER TUBE of the registered item? You had them cut and thread it to add an end cap? Thus resulting in shortening the tube (the registered item). That in turn affects its overall length of how it was registered on the form 4.

You also just voided your warranty with AAC.
What kind of reputation does this "LRP" place have? Do you trust their work?
What if you get an end cap strike because their machine work was off?
 
Re: AAC DEFENDER back from haveing new end cap made

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body">And in reality you are saying you altered the OUTER TUBE of the registered item? You had them cut and thread it to add an end cap? Thus resulting in shortening the tube (the registered item). That in turn affects its overall length of how it was registered on the form 4.

You also just voided your warranty with AAC.
What kind of reputation does this "LRP" place have? Do you trust their work?
What if you get an end cap strike because their machine work was off?

</div></div>


actually the tube was already threaded i just had a new end cap made with the same threading as the original cap.

do i trust their work ? yes

do i think their will be an end cap strike ? not at all

did the over all length change ? not at all he made the old cap the same oal as the old one, the length of threaded section is the same from shoulder to end.

thats why the caps shoulder is longer to match from the old ones shoulder to height of dome, going into this project i stressed the same Oal.

the tube was in no way modified, and iam not expecting it to be any quieter then before, out side of rotating baffles or maybe a bit better suppression ( if at all possible )

next step is new baffles maybe a mono core.

aac warranty hahahaha ya ok
 
Re: AAC DEFENDER back from haveing new end cap made

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Outsy</div><div class="ubbcode-body">KY, Titsworth site costs money, do you really think that cheap fuck is gonna splurge to read info when he can come here and ask his question and someone will tell him the answer but he wont listen anyhow. <span style="color: #33CC00">And then call them "jack asses"</span> </div></div>

That is a good point Outsy..... and I added in what you forgot to mention.

He will buy outdated accessories. But why should I search the internet for information when I can make an exclamation point post about the dumbest shit I can possibly accessorize my firearms with?! Because I am Black_UMP!!!! </div></div>

BINGO !!!!!!!!!!!!!!!!!!
 
Re: AAC DEFENDER back from haveing new end cap made

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: black_ump</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body">And in reality you are saying you altered the OUTER TUBE of the registered item? You had them cut and thread it to add an end cap? Thus resulting in shortening the tube (the registered item). That in turn affects its overall length of how it was registered on the form 4.

You also just voided your warranty with AAC.
What kind of reputation does this "LRP" place have? Do you trust their work?
What if you get an end cap strike because their machine work was off?

</div></div>


actually the tube was already threaded i just had a new end cap made with the same threading as the original cap.

do i trust their work ? yes

do i think their will be an end cap strike ? not at all

did the over all length change ? not at all he made the old cap the same oal as the old one, the length of threaded section is the same from shoulder to end.

thats why the caps shoulder is longer to match from the old ones shoulder to height of dome, going into this project i stressed the same Oal.

the tube was in no way modified, and iam not expecting it to be any quieter then before, out side of rotating baffles or maybe a bit better suppression ( if at all possible )

next step is new baffles maybe a mono core.

<span style="color: #FF0000">aac warranty hahahaha ya ok</span> </div></div>

Oh forgive me, I forgot you have such extensive knowledge and use out of their CS department. How many of their cans do you own? How many times have you USED they CS there? I have a few times and they always took care of the situation.

Why are you dumping so much money into an old relic that has been surpassed 10 times with technology and new materials coming to light?

This seems so redundant.
 
Re: AAC DEFENDER back from haveing new end cap made

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: black_ump</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Outsy</div><div class="ubbcode-body">KY, Titsworth site costs money, do you really think that cheap fuck is gonna splurge to read info when he can come here and ask his question and someone will tell him the answer but he wont listen anyhow. <span style="color: #33CC00">And then call them "jack asses"</span> </div></div>

That is a good point Outsy..... and I added in what you forgot to mention.

He will buy outdated accessories. But why should I search the internet for information when I can make an exclamation point post about the dumbest shit I can possibly accessorize my firearms with?! Because I am Black_UMP!!!! </div></div>

BINGO !!!!!!!!!!!!!!!!!! </div></div>

You are the poster child for laziness.
 
Re: AAC DEFENDER back from haveing new end cap made

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body">And in reality you are saying you altered the OUTER TUBE of the registered item? You had them cut and thread it to add an end cap? Thus resulting in shortening the tube (the registered item). That in turn affects its overall length of how it was registered on the form 4.

You also just voided your warranty with AAC. What kind of reputation does this "LRP" place have? Do you trust their work? What if you get an end cap strike because their machine work was off?</div></div>

I don't have the exact reference handy, but I'm fairly certain that there's nothing wrong with shortening the outer tube length. That allows for repairs. I know you can't make it any longer though.

Besides, there's no way AAC would warranty that tore-up old can anyway.
 
Re: AAC DEFENDER back from haveing new end cap made

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: black_ump</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body">And in reality you are saying you altered the OUTER TUBE of the registered item? You had them cut and thread it to add an end cap? Thus resulting in shortening the tube (the registered item). That in turn affects its overall length of how it was registered on the form 4.

You also just voided your warranty with AAC.
What kind of reputation does this "LRP" place have? Do you trust their work?
What if you get an end cap strike because their machine work was off?

</div></div>


actually the tube was already threaded i just had a new end cap made with the same threading as the original cap.

do i trust their work ? yes

do i think their will be an end cap strike ? not at all

did the over all length change ? not at all he made the old cap the same oal as the old one, the length of threaded section is the same from shoulder to end.

thats why the caps shoulder is longer to match from the old ones shoulder to height of dome, going into this project i stressed the same Oal.

the tube was in no way modified, and iam not expecting it to be any quieter then before, out side of rotating baffles or maybe a bit better suppression ( if at all possible )

next step is new baffles maybe a mono core.

<span style="color: #FF0000">aac warranty hahahaha ya ok</span> </div></div>

Oh forgive me, I forgot you have such extensive knowledge and use out of their CS department. How many of their cans do you own? How many times have you USED they CS there? I have a few times and they always took care of the situation.

Why are you dumping so much money into an old relic that has been surpassed 10 times with technology and new materials coming to light?

This seems so redundant. </div></div>

well no extensive knowledge of their cs, but i was an aero/space machinist for the last 5 years, i know my way around calipers, mic's, cmm's and so forth, i did include a print of both old and new cap, every thing was made to spec, and every thing critical was made with a +/- .001 tolerance

i highly doubt their will be a problem.


oh and ya aac did discontinue the suppressor so iam not worried about a warranty, and again the tube was not modified