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2/21/2008 9:05:47 PM EDT
What is out there in the 4 inch range for 5.56?

SRT is the only one I can think of off the top of my head.
2/21/2008 9:32:09 PM EDT
[#1]
The problem and reason why options don't abound is the shorter you get, the less likely the can is to appreciably reduce sound.  

My 7.62SD is 9" long and barely touches ear safe, <IE there is some slight discomfort on some rounds, but no ringing of my ears (except for exciting the tinitus in my right ear which is normal with any decent sound). It's better than an M4QD I know, but not quiet to where I'd want to shoot 300 rounds without ear pro.  

The 4" or less cans will probably fall into the category, of "well it's almost worthless, but not quite completely worthless."

Another consideration is flash, which is slightly higher than a good flash hider with a good sound suppressor, and probably a lot greater with a crappy sound suppressor.  

I think HTG and Soundtech made short fat cans at least at one time.  
2/21/2008 10:07:18 PM EDT
[#2]
Thanks.

Doug claims 33 dB from a can that is less than 5 total (4.1 past the crown).

That's the heat.

I have the SF, but thread ons make more sense for 99% of people.
2/22/2008 9:14:01 AM EDT
[#3]

Quoted:
What is out there in the 4 inch range for 5.56?

SRT is the only one I can think of off the top of my head.

I'm looking for the same thing.  SRT is certainly the shortest I can find.  The AAC Ranger and the Gemtech Piranha seem to be the closest competitors, both are around 6" long but weigh an ounce or two less than the SRT.


Also, they are not thread ons but Ops and Surefire make reflex cans that don't add much more overall length to the weapon.  The Ops 14th adds 4.5" and is 2oz lighter than the SRT.  neither of those options are suitable for the SBRs I want to use them on, though.
2/22/2008 9:23:38 AM EDT
[#4]
You can get an OPS on a 10 inch barrel if you have a gas block modified for it.
2/23/2008 8:19:25 AM EDT
[#5]
I have a HTG Eureka on a 10.5" barrel. It is 4.58" long (total), and weighs 14oz, and retails @ $550

The SRT Typhoon is quoted as adding 4.1" to the barrel, so is probably 4.7" long, and weighs 17oz with a $545 retail.

I talked to SRT last week about their new Titanium Typhoon which is the same length, but I think he said weighs 11oz, and retails for about $1,000.

The smallest OPS Inc suppressor, 14th, adds 4.5" to the barrel, and weighs 17oz, and retails for $875 at ADCO.
A couple of weeks ago, I talked to the guy at the OPS shop (can't remember his name), and he said the 14th wouldn't be hearing safe on a 10.5" barrel, but his 15th would. It's 17oz, and adds 5.25oz past the crown, retails the same $875.

My HTG Eureka may, or may not be hearing safe. Shooting it is a little quieter than standing beside it, though. I bought it to use on coyotes & hogs that may unexpectedly pop up on our farm, so I wanted to knock the sound down to where I didn't blow my eardrums out with a couple of quick shots, but was still portable - I think it is perfect for that.
Al Paulerson wrote an article comparing HTG's Eureka, and their larger/quieter Aries, to the AAC Ranger, and Gemtec's M402.
Paulerson's 223 Suppressor Test

I would have probably gone with the OPS Inc if price was no object


Following is a pic of my Eureka on my 10.5":


2/23/2008 11:49:10 AM EDT
[#6]
No matter how long or short the suppressor, an AR15 is NOT hearing safe. As described by OSHA, the sound from an AR15 is above hearing safe levels, regardless of whether the rifle and suppressor rings your ears or not. Obviously some suppressors will be quieter than others but you will still damage your hearing if you fire a suppressed AR15 prolonged without hearing protection.

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