Mini-14 barrel thread shoulder can't mount a sound suppressor?

[Todd.K]

I wouldn’t shoot my silencers on that “shoulder”. Some mounts can stop on the muzzle, they don’t need a shoulder. I would find one of those.

Did you make sure the silencer even has 5/8-24 mounts available? Because the mount that comes with a 5.56 silencer is going to be 1/2-28.

And then more in general, why? After your 9mm disappointment you decided to mount a loud 5.56 silencer on a bad host.

[georgeib]

I wouldn’t shoot my silencers on that “shoulder”. Some mounts can stop on the muzzle, they don’t need a shoulder. I would find one of those.

Did you make sure the silencer even has 5/8-24 mounts available? Because the mount that comes with a 5.56 silencer is going to be 1/2-28.

And then more in general, why? After your 9mm disappointment you decided to mount a loud 5.56 silencer on a bad host.

Agreed with everything you wrote, with exception of the bolded phrase. The Flow 556K is the quietest at the ear 556 suppressor that Pew Science has tested.

[Ron3]

I wouldn’t shoot my silencers on that “shoulder”. Some mounts can stop on the muzzle, they don’t need a shoulder. I would find one of those.

Did you make sure the silencer even has 5/8-24 mounts available? Because the mount that comes with a 5.56 silencer is going to be 1/2-28.

And then more in general, why? After your 9mm disappointment you decided to mount a loud 5.56 silencer on a bad host.

Both my Mini and the 556K Flow are 1/2x28.

Yea, I know a supersonic rifle round will always be loud. I wanted it to not ring my ears when I'm wearing plugs & muffs at an indoor range or outdoor range next to walls and such. (I shoot at both types)

I will get one of those "shoulder rings" if I need to. Probably will need to.

[Todd.K]

The 5/8-24 reference earlier is confusing, but must have been in reference to the 300 BLK thread.

I would check your muzzle device for an internal shoulder. See I f the end of the threads steps down to a small hole. As long as it’s square and flat, you can use that against the muzzle.

The problem with trying to apply the SCAR or SIG shoulder part here, is the the SCAR has a small but distinct shoulder at the base of the threads and the SIG has a precision taper. Your picture looks more like a big radius, so there isn’t anything to match the adapter part to.

[Ron3]

The 5/8-24 reference earlier is confusing, but must have been in reference to the 300 BLK thread.

I would check your muzzle device for an internal shoulder. See I f the end of the threads steps down to a small hole. As long as it’s square and flat, you can use that against the muzzle.

The problem with trying to apply the SCAR or SIG shoulder part here, is the the SCAR has a small but distinct shoulder at the base of the threads and the SIG has a precision taper. Your picture looks more like a big radius, so there isn’t anything to match the adapter part to.

I see. Hopefully the included Flow flash hider mount seats against the muzzle.

[Todd.K]

Agreed with everything you wrote, with exception of the bolded phrase. The Flow 556K is the quietest at the ear 556 suppressor that Pew Science has tested.

As best as I can figure, the “suppressor rating” is some secret formula math project. Thus nobody can replicate it, nor understand how the formula is weighted.

It appears to be some combination of time, frequency, and sound pressure level.

Something like this is used in industrial hearing safety for exposure limits that include duration. It is suitable for hearing protection concerns over a work shift, may be suitable for how much .22 or subsonic 9mm is actually hearing safe, but it is not an effective way to measure how loud something “sounds” to the human ear.

[georgeib]

As best as I can figure, the “suppressor rating” is some secret formula math project. Thus nobody can replicate it, nor understand how the formula is weighted.

It appears to be some combination of time, frequency, and sound pressure level.

Something like this is used in industrial hearing safety for exposure limits that include duration. It is suitable for hearing protection concerns over a work shift, may be suitable for how much .22 or subsonic 9mm is actually hearing safe, but it is not an effective way to measure how loud something “sounds” to the human ear.

Yeah, there's definitely more to it than I understand. I know that shooting a Flow 556 next to a HX-QD 556, and Turbo K, they all sound pretty damn similar indoors and out, with a slight edge going to the 2 OSS/Hux cans. None of which I would describe as loud, nor all that quite for that matter. But they were all tolerable without hearing pro.

[SteyrAUG]

As best as I can figure, the “suppressor rating” is some secret formula math project. Thus nobody can replicate it, nor understand how the formula is weighted.

It appears to be some combination of time, frequency, and sound pressure level.

Something like this is used in industrial hearing safety for exposure limits that include duration. It is suitable for hearing protection concerns over a work shift, may be suitable for how much .22 or subsonic 9mm is actually hearing safe, but it is not an effective way to measure how loud something “sounds” to the human ear.

Years ago I talked to the guys at Gemtech at length about why they dropped their db ratings from their catalog for suppressors.

Basically they were doing it under controlled conditions, in a room with high quality sound meters that gave them the same results every single time. Then the guys at AAC would go shoot their suppressor outdoors on the same rifle and of course get a much lower db reading as a result and then they'd advertise that "real world" rating in their catalog.

Even inside, if you don't have the correct setup, I can get 12 different readings from the same rifle, with the same ammo and even the same shooter with a pretty serious spread. Outdoors I can make a suppressed .22 read like a .308 carbine and a .308 carbine read like a suppressed .22.

This of course makes all those YT videos, even from the good guys, pretty pointless when it comes to suppressor taste tests.

[Ron3]

I've checked fitment with the Huxwrx flash hider suppressor mount.

The factory Ruger flash suppressor has an internal, beveled shoulder. I can't tell it this flash suppressor presses against the muzzle or the end of the muzzle threads where the rest of the barrel starts. It's very close.

The Huxwrx flash suppressor does not have an internal, beveled shoulder. It only stops at the where the muzzle threads end.

What I think would work is a nut, with a shoulder ring, and tightening the flash hider / suppressor mount against that. I don't know if such a thing exists.

I will try to find a shoulder ring that will sit between the flash hider mount and end of the threads and see if that mounts concentrically. Anyone know of a source for that part?

I'm not willing to go through the effort, expense, and risk of having the barrel pulled and a thread shoulder machined. If I have to do that I won't be mounting a suppressor on this gun.

[SteyrAUG]

I've checked fitment with the Huxwrx flash hider suppressor mount.

The factory Ruger flash suppressor has an internal, beveled shoulder. I can't tell it this flash suppressor presses against the muzzle or the end of the muzzle threads where the rest of the barrel starts. It's very close.

The Huxwrx flash suppressor does not have an internal, beveled shoulder. It only stops at the where the muzzle threads end.

What I think would work is a nut, with a shoulder ring, and tightening the flash hider / suppressor mount against that. I don't know if such a thing exists.

I will try to find a shoulder ring that will sit between the flash hider mount and end of the threads and see if that mounts concentrically. Anyone know of a source for that part?

I'm not willing to go through the effort, expense, and risk of having the barrel pulled and a thread shoulder machined. If I have to do that I won't be mounting a suppressor on this gun.

If I did anything I would contact Huxworx and find out of their suppressor is compatible with the Ruger Mini 14 and if not, if they make a mounting device like you are looking for.

Only thing I've ever mounted on a Mini 14 is a Gemtech HALO.