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8/23/2026 3:40:29 PM EDT
Does anyone here have an experience with the ultra short suppressors for 556?  Are you happy with the performance?  I’m not so much concerned with how quiet it is but back pressure and signature reduction.  However I would like not to be deaf if I shoot a few rounds without Earpro.

I’m sure there are more but the ones I can think of.

SAW Tisha
Irregular design 556uk
Griffin hrt 5k am
YHM fat cat
8/23/2026 3:45:56 PM EDT
[#1]
The tisha is crazy good. Much quieter and lower back pressure than my Hesychia uk hub.

And the Tisha isnt just quiet for a sub 5 inch silencer, its just flat out quiet. Definitely my best sounding 556 silencer out of the 12 556 Silencers I own
8/23/2026 3:46:26 PM EDT
[#2]

The Rhino X is right at 5” or so, not sure if that would qualify for you. It’s very impressive on longer barrel, and still very doable on shorties. The Rotex Mini K I’ve got is like 4” and pretty loud.
8/23/2026 3:47:09 PM EDT
[Last Edit: Green0][Edited] [#3]
I kind of thought at 5.25” with the dual lok version, on the included mount, the HRT5K was good for that.

The numbers and dosing suggest it was similar in safety to a Hux flow 556k which bats above its peak SPL reduction through some strange short duration or whatever it is.  

I haven’t heard or metered the other cans, but the people claim the tisha does pretty well. That seems to be pretty widespread opinion whereas the irregular defense seems to get less attention.  

I know in part that could certainly just be better marketing reach at saw though.

The irregular can is better looking than the tisha to me, but thats not a performance metric.
Austin, Managing Partner - www.GriffinArmament.com
8/23/2026 3:58:18 PM EDT
[#4]
Quote History
Originally Posted By Green0:
I kind of thought at 5.25” with the dual lok version, on the included mount, the HRT5K was good for that.

The numbers and dosing suggest it was similar in safety to a Hux flow 556k which bats above its peak SPL reduction through some strange short duration or whatever it is.  

I haven’t heard or metered the other cans, but the people claim the tisha does pretty well. That seems to be pretty widespread opinion whereas the irregular defense seems to get less attention.  

I know in part that could certainly just be better marketing reach at saw though.

The irregular can is better looking than the tisha to me, but thats not a performance metric.
View Quote


@Green0
I just bought a HRT 5k am last night.  I got the dual lock version.  Cause I figure the added overall added length is roughly the same as the hub version since the locking mechanism looks like it might go over the barrel.  Could be wrong though.
8/23/2026 4:03:32 PM EDT
[#5]
Quote History
Originally Posted By The_Sugar_Weasel:
The tisha is crazy good. Much quieter and lower back pressure than my Hesychia uk hub.

And the Tisha isnt just quiet for a sub 5 inch silencer, its just flat out quiet. Definitely my best sounding 556 silencer out of the 12 556 Silencers I own
View Quote

Thank you I was hoping someone had both.  My lead levels are high and climbing so flow through cans only for me now.   Do you have the Ti or inconel version?
8/23/2026 4:05:04 PM EDT
[#6]
Quote History
Originally Posted By bigtex84:

Thank you I was hoping someone had both.  My lead levels are high and climbing so flow through cans only for me now.   Do you have the Ti or inconel version?
View Quote


Both

My inconel is the old style and my Ti is the newer style. I cant tell a difference in sound or back pressure between them.
8/23/2026 4:13:54 PM EDT
[Last Edit: cardboardkiller][Edited] [#7]
Inconel Tisha and Rhodie inconel 6k owner here. Both are beyond great, but the Tisha is the better of the two in my opinion. I’ve used both on my 10.5” DI SBR build and my 11” MR556 A4 factory SBR. The Tisha is dedicated to the HK.

I need to try the 6k on my 10.5” LWRC, 11.5” LMT and 13.7” Blackout Defense SBR’s.
8/23/2026 4:23:54 PM EDT
[Last Edit: Green0][Edited] [#8]
Quote History
Originally Posted By bigtex84:


@Green0
I just bought a HRT 5k am last night.  I got the dual lock version.  Cause I figure the added overall added length is roughly the same as the hub version since the locking mechanism looks like it might go over the barrel.  Could be wrong though.
View Quote


I think you will like the can.  Thanks for your business.

If you put dual lok on the hrt5k hub version it takes length from 4.5 to 5.55”, where native dual lok is 5.25” oal. This is one of the ways everyone thinks hub cans are shorter- the companies generally all spec naked hub lengths. You can see videos of people referring to 6.5” or even longer cans as k cans, and its because they are thinking without the length of the mounts they added.

Dual lok muzzle devices are fluch with the back of the can.  The muzzle device goes over just .660” of barrel [mostly threads], though a bayonet otb muzzle brake can shorten mounted length .890 or something around that more.  I don’t think shortening the mounted length of already short cans is a great idea as it will likely reduce some performance.
Austin, Managing Partner - www.GriffinArmament.com
8/23/2026 4:51:29 PM EDT
[#9]
Attached File


Hrt5k hub

I have a few other low back pressure cans and this one is crazy.

Just put 18 rounds through it (all I had in an open box).

Weight and length on it are great. Sound was good.
8/23/2026 5:06:36 PM EDT
[#10]
Quote History
Originally Posted By The_Sugar_Weasel:


Both

My inconel is the old style and my Ti is the newer style. I cant tell a difference in sound or back pressure between them.
View Quote

Awesome I guess an inconel Tisha is in my near future.
8/24/2026 8:01:01 AM EDT
[#11]
just got back from night match with HRT5kAM. compared to explorr, no gas to face, sounded good. worth the extra 3oz (short plan A included in weight) for shorter, less back pressure.
www.newnanarmscompany.com
8/24/2026 8:09:47 AM EDT
[#12]
HRT5AM & HRT5KAM kick ass. ^^
8/24/2026 8:31:59 AM EDT
[#13]
I have a Jaguar Fatty on the way.  4.5” long and about 7 oz.

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