Same suppressor for ar.45 and 300 Blkout possible ?

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Same suppressor for ar.45 and 300 Blkout possible ?

Postby Baltimoreed11754 » Mon Aug 24, 2015 11:34 am

I had a chance to shoot a friends suppressed 11 1/2 inch bbl, 300 blkout SBR this weekend. What a cool gun. He did a great job and built a very nice rifle. The neat thing is that he built it with the ability to swap his 30 cal suppressor back and forth between his .223 and .300. What I'm asking the forum is: can I do the same thing with my .45 SBR and my .300 blkout rifle? Buy a .45 suppressor and swap it back and forth to my .300? I would expect that it wouldn't be as quiet as a 30 cal unit would be but other than that could it work? But, before I get jumped on about posting this question here, the OA suppressor forum has been years since a post so I'm thinking this would be a much better spot to ask this. You pistol cal AR guys are talkin and "a building". I didn't think I wanted to get my ARs suppressed but now I might have to make to. Thanks ahead of time for the imput.
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby Thom » Mon Aug 24, 2015 5:51 pm

Simple answer is yes, you can probably use your .45 can for the .300 BO (Though not vice-versa of course!) as long as you can marry up the threads.

John A can give you better answers, but logic say's the .45 can with the larger bore will probably not be as efficient with the 30 cal bullets since there will be gas blow by, unless your can uses wipes, but I don't know of any currently manufactured cans that do. Another issue may be the can volume, most pistol cans are not as voluminous and rifle cans, so there could be some added "boom" there too.

One of the YouTubers I sometimes watch uses a 9mm can on his 5.56 with great success. He swaps the can from a Sig 9mm handgun, to a 9mm AR upper to a 5.56 AR upper.
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby John A. » Mon Aug 24, 2015 6:26 pm

You would have to really ask the suppressor manufacturer.

Though I'm pretty certain that if you use a 45acp suppressor, you wouldn't be able to use standard (supersonic) ammo through it since the max pressure of the blackout would exceed what a 45 acp is rated at.

There are some 9mm suppressors that are rated for 300 blackout subsonic. (again, not supersonic).

A 30 caliber suppressor would be able to handle supersonic or subsonic blackout, 223, 308, et al. because they are designed to handle the pressure.

The short answer is, you'd really need to ask the suppressor manufacturer if their suppressors can stand up to the psi.

Also, while there may not be any new topics in the suppressor forum, everyone will still see the new topic, and I'm certain that Belial and myself has made a few new replies to some of the threads pretty recently.
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby Globemaster » Mon Aug 24, 2015 6:36 pm

Baltimoreed1 1754 wrote: I had a chance to shoot a friends suppressed 11 1/2 inch bbl, 300 blkout SBR this weekend. What a cool gun. He did a great job and built a very nice rifle. The neat thing is that he built it with the ability to swap his 30 cal suppressor back and forth between his .223 and .300.

sounds like a fun carbine, I built a 300/BO (aka 300/FireBall) a few years ago; I like the caliber; and suppressing it is very popular.

Baltimoreed1 1754 wrote: What I'm asking the forum is: can I do the same thing with my .45 SBR and my .300 blkout rifle? Buy a .45 suppressor and swap it back and forth to my .300? I would expect that it wouldn't be as quiet as a 30 cal unit would be but other than that could it work?

while I’m not a ‘CAN’ (suppressor) connoisseur; I don’t see why that combination wouldn’t work; but like John said, the manufacturer would be the one to ask, regarding the pressure variables.

Baltimoreed1 1754 wrote: But, before I get jumped on about posting this question here, the OA suppressor forum has been years since a post so I'm thinking this would be a much better spot to ask this.

this room is quite adequate … :thumbs up:

Baltimoreed1 1754 wrote: You pistol cal AR guys are talkin and "a building". I didn't think I wanted to get my ARs suppressed but now I might have to make to. Thanks ahead of time for the input.

like I said earlier, suppressors don’t do to much for me, as I have no real purpose (application) to own one; or any need to; if I ever do purchase a CAN, it’ll be used on .22LR unit; most likely a Ruger® 10/22 variant. :D
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby Thom » Mon Aug 24, 2015 9:41 pm

I would love one on a .22 handgun, maybe a can that I could quick mount and share between a .22 rifle & pistol eventually.
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby Globemaster » Mon Aug 24, 2015 10:18 pm

Thom wrote: maybe a can that I could quick mount and share between a .22 rifle & pistol eventually.

there ya go :thumbs up:
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby John A. » Tue Aug 25, 2015 5:06 am

Thom wrote:I would love one on a .22 handgun, maybe a can that I could quick mount and share between a .22 rifle & pistol eventually.


What's wrong with a basic thread mount?

What's stopping you from using it on a pistol or rifle?
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby Globemaster » Tue Aug 25, 2015 1:57 pm

John A. wrote: What's wrong with a basic thread mount?

what a basic thread pitch for suppressors? 5/8x24TPI ? or are ya talking about an adapter type device, where the CAN ratchets onto the adapter for mounting?
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby John A. » Tue Aug 25, 2015 4:11 pm

A quick detach mount could be one that latches around a flash hider, a 3 lug, etc.

The threads would be different for blackout and AR45 though, but a basic thread adapter would let them work on different guns.

I have several thread adapters.

http://i108.photobucket.com/albums/n33/ ... 5784f8.jpg

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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby Globemaster » Tue Aug 25, 2015 4:29 pm

roger that John ... yeah I kinda like this AAC® mounting system myself, they're super fast to put on; I've handled them at SHOT Show before

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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby John A. » Tue Aug 25, 2015 4:40 pm

I'm not fond of the AAC.

That distinct "ping" tuning fork sound when you shoot is a deal breaker for me.



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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby Globemaster » Tue Aug 25, 2015 4:48 pm

John A. wrote: That distinct "ping" tuning fork sound when you shoot is a deal breaker for me.

copy that bro, wow! I had no idea that it was that pronounced ... I guess that device is off my list now ;-)
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby Thom » Tue Aug 25, 2015 8:11 pm

John A. wrote:
Thom wrote:I would love one on a .22 handgun, maybe a can that I could quick mount and share between a .22 rifle & pistol eventually.


What's wrong with a basic thread mount?

What's stopping you from using it on a pistol or rifle?



Just want something I can change without having to take a wrench to it every time.
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Re: Same suppressor for ar.45 and 300 Blkout possible ?

Postby John A. » Tue Aug 25, 2015 8:29 pm

You don't have to go gorilla on it.

I just tighten mine up good and hand tight.

They're not bad to loosen up. Unless it's a course thread like 7/8 - 9 or something. Fine threads (like 1/2-28 is what most all 22 suppressors are), aren't bad to back off on their own.

I've never had my suppressor to loosen up. Even while shooting full auto.

If anything, when they get hot, they typically swell and are near impossible to unscrew until the barrel and can cools down.
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