Direct thread vs QD

[zdc1775]

So I am looking into purchasing a couple of new rifle suppressors in the next month or two, they will likely be the ECCO Accipiter (how is that pronounced btw) and Five By Five, and was wondering what the general consensus was on getting direct thread adaptors vs using qd mounts, and if qd which one? All my previous experience with suppressors have been with direct thread models with the one qd being the OPS Inc. suppressor on my Mk12 when I was active duty.

My plan now is for the Five By Five to go on my 10.5 SBR and the Accipiter to be swapped between a 6 CM bolt gun, and my 2 18" AR's in 5.56 and 6 ARC.

Thanks for any help you guys can give.

 

[Soonerpesek]

Have Nick set the Accipiter up to accept the DeadAir Keymo QD mount (best, but $$), or the SiCo ASR system (good and economical(er) ).......

 

[horsemen61]

@MachIVshooter has the answers to your questions for He builds the products you are planning on buying I defer to him

 

[Telekinesis]

In my experience it depends a little on how you plan to use the can. Direct thread cans will eventually start backing off (effectively unscrewing themselves) which risks baffle strikes. You’ll want to pay a bit of attention or at least a check every once in a while to make sure they are still firmly attached. Not a big deal on a bolt gun or on long range setup where you aren’t putting a lot of rounds down range, but if you’re shooting quickly it can become a problem.

This issue isn’t completely resolved by using a QD mount either. I have been to a number of defensive rifle classes where a suppressor gets loose and has a baffle strike. Sometimes it is minor with only a small touch on the end cap, and sometimes it is quite exciting with the suppressor spontaneously disassembling itself and sending baffles down range. I even know a guy who completely lost a HuxWrx (shooting off of a helicopter at night, so no recovery of the can was possible). I suspect most of these guys were using QD attachments that were the cause of the baffle strikes, but the issue is still the same as if they were using direct thread.

To me the mark of a good QD adapter is less about being able to quickly install or remove the can and more about being able to lock the can on the gun. I would recommend using this standard for any defensive or high round count gun you plan to suppress.

With that in mind, the only suppressors I’ve seen that haven’t had issues are Surefire. Not to say that they are the only ones who won’t have issues or that Surefires can’t have issues themselves, but if I was to bet on a QD mount that wouldn’t let go, it would be theirs.



The downside to going with a QD is that you need to have an adapter for each weapon you want to suppress (which gets expensive), and once you’re invested into the “ecosystem” if you will, you are kind of stuck there. For example, you usually can’t put Company A’s suppressor on Company B’s mount unless they share the same mounting standard. This used to be more of an issue in the past than it is now, but it is still something to watch out for. If you want to swap suppressors around on different rifles it might be easier to stick with direct thread.

Also consider that if you want to have a flash hider or brake on the gun whenever it is not being suppressed, you’re pretty much stuck with a QD of some sort unless you enjoy carrying around crush washers or shims and installing/timing muzzle devices repeatedly (thinking about your 10.5” SBR).



So in conclusion, if you want your guns to be able to easily use suppressors from different companies, direct thread might be a good way to go. If you want a flash hider when the gun is unsuppressed or plan to do defensive work, carbine classes, or high round count things where you can’t easily check to be sure the can is still tight (remember they get hot) you’ll want a good QD.

 

[Space Ghost]

I only have the one suppressor for centerfire weapons, and one for .22LR ones.
The .22 can is, of course, a threaded model, but I opted for a QD one for centerfires.
I got the Surefire SOCOM 762 mini2. It will fit on the ARs, the Ruger American, the Remington 700 Classic...

 

[zdc1775]

Have Nick set the Accipiter up to accept the DeadAir Keymo QD mount (best, but $$), or the SiCo ASR system (good and economical(er) ).......

Thanks for the information, I will definitely talk to him and get his opinion before ordering.

@MachIVshooter has the answers to your questions for He builds the products you are planning on buying I defer to him

Honestly, that is the only reason I even knew about ECCO Machine suppressors and one of the reason to buy from them, just didn't want to call him out directly here as I thought that would seem a bit rude.

In my experience it depends a little on how you plan to use the can. Direct thread cans will eventually start backing off (effectively unscrewing themselves) which risks baffle strikes. You’ll want to pay a bit of attention or at least a check every once in a while to make sure they are still firmly attached. Not a big deal on a bolt gun or on long range setup where you aren’t putting a lot of rounds down range, but if you’re shooting quickly it can become a problem.

This issue isn’t completely resolved by using a QD mount either. I have been to a number of defensive rifle classes where a suppressor gets loose and has a baffle strike. Sometimes it is minor with only a small touch on the end cap, and sometimes it is quite exciting with the suppressor spontaneously disassembling itself and sending baffles down range. I even know a guy who completely lost a HuxWrx (shooting off of a helicopter at night, so no recovery of the can was possible). I suspect most of these guys were using QD attachments that were the cause of the baffle strikes, but the issue is still the same as if they were using direct thread.

To me the mark of a good QD adapter is less about being able to quickly install or remove the can and more about being able to lock the can on the gun. I would recommend using this standard for any defensive or high round count gun you plan to suppress.

With that in mind, the only suppressors I’ve seen that haven’t had issues are Surefire. Not to say that they are the only ones who won’t have issues or that Surefires can’t have issues themselves, but if I was to bet on a QD mount that wouldn’t let go, it would be theirs.



The downside to going with a QD is that you need to have an adapter for each weapon you want to suppress (which gets expensive), and once you’re invested into the “ecosystem” if you will, you are kind of stuck there. For example, you usually can’t put Company A’s suppressor on Company B’s mount unless they share the same mounting standard. This used to be more of an issue in the past than it is now, but it is still something to watch out for. If you want to swap suppressors around on different rifles it might be easier to stick with direct thread.

Also consider that if you want to have a flash hider or brake on the gun whenever it is not being suppressed, you’re pretty much stuck with a QD of some sort unless you enjoy carrying around crush washers or shims and installing/timing muzzle devices repeatedly (thinking about your 10.5” SBR).



So in conclusion, if you want your guns to be able to easily use suppressors from different companies, direct thread might be a good way to go. If you want a flash hider when the gun is unsuppressed or plan to do defensive work, carbine classes, or high round count things where you can’t easily check to be sure the can is still tight (remember they get hot) you’ll want a good QD.

Thank you for the information, and needing a break on the SBR can was one of the things that made me think going with a QD makes the most sense since shooting it unsuppressed is already unpleasant with the current flash hider and having it be QD would make it harder to justify not using the suppressor all the time.

I only have the one suppressor for centerfire weapons, and one for .22LR ones.
The .22 can is, of course, a threaded model, but I opted for a QD one for centerfires.
I got the Surefire SOCOM 762 mini2. It will fit on the ARs, the Ruger American, the Remington 700 Classic...

View attachment 1188709

Thanks for the info.

It's certainly seeming like QD might be the better way to go even if that does add a bit of expense to the already expensive endeavor.

 

[BreechFace]

QD

 

[Soonerpesek]

Honestly, that is the only reason I even knew about ECCO Machine suppressors and one of the reason to buy from them, just didn't want to call him out directly here as I thought that would seem a bit

Shoot him a PM…..
He is a very easy fellow to deal with….!!

 

[zdc1775]

Shoot him a PM…..
He is a very easy fellow to deal with….!!

I definitely will as I get closer to pulling the trigger on ordering these. Only things keeping me from doing it today are my wife (she says I can't buy anymore gun related things until I finish the flooring in the bathroom), and finding an SOT in my area that I want to do business with (though that is coming along, if only I didn't have to work 4 out the 5 or 6 days they are all open).

 

[BreechFace]

I definitely will as I get closer to pulling the trigger on ordering these. Only things keeping me from doing it today are my wife (she says I can't buy anymore gun related things until I finish the flooring in the bathroom), and finding an SOT in my area that I want to do business with (though that is coming along, if only I didn't have to work 4 out the 5 or 6 days they are all open).

Area rugs are quick to cover floors

 

[BreechFace]

Nick and Jerrica at ECCO Machine are great to work with. And their stuff is quality!

 

[Space Ghost]

It's certainly seeming like QD might be the better way to go even if that does add a bit of expense to the already expensive endeavor.

Same suppressor going quickly from gun to gun makes their cost (and gov hassle) easier to deal with.
Just the fact that every can cost me $200 to the gov, (more than the cost of a muzzle device) and a LONG wait time... makes using one can on several rifles worth it.









I just add a matching Surefire muzzle device to each gun I may use the can with.
One .30 cal can can work with everything from .300 WM on down.

 

[zdc1775]

Area rugs are quick to cover floors

You have a point, unfortunately I doubt the wife would see it that way.

Same suppressor going quickly from gun to gun makes their cost (and gov hassle) easier to deal with.
Just the fact that every can cost me $200 to the gov, (more than the cost of a muzzle device) and a LONG wait time... makes using one can on several rifles worth it.

View attachment 1188731

View attachment 1188732

View attachment 1188733

View attachment 1188734

I just add a matching Surefire muzzle device to each gun I may use the can with.
One .30 cal can can work with everything from .300 WM on down.

View attachment 1188735

That was my thinking as well. Also, nice belt and chest rigs you have there. I'm in the process of upgrading mine now.

 

[MachIVshooter]

Thanks for the information, I will definitely talk to him and get his opinion before ordering.



Honestly, that is the only reason I even knew about ECCO Machine suppressors and one of the reason to buy from them, just didn't want to call him out directly here as I thought that would seem a bit rude.

Not rude at all, happy to answer questions!

My personal preference for most rifle applications is taper mount systems. Some of the secondary retention QD systems on the market don't have as good of repeatability, and all of them are a good bit heavier. Direct thread will always be your lightest option, but retention and repeatability just aren't on par with taper mounts. We of course like our own Gyrex taper mounts, but Griffin taper mounts and Rearden (Cherry Bomb style) are also great options. The Rearden stuff will be lightest, Griffin currently supports the most thread patterns and muzzle device styles, our Gyrex has the most substantial taper and our unique helix port brakes (which we may eventually offer in those other taper patterns, but do not currently).

As for the cans, we did get cleaned out on black Friday and have been struggling to catch up ever since, so we're currently out of Five By Fives, but they're on the short list as a very popular model. Just brought in another basic CNC lathe to augment turning, it's almost ready to rock, waiting on a few more tools and tool holders to arrive. So with that, my hope is to not be perpetually out of a few things at any given time. I really need another guy here, but our experience with employees unfortunately showed me that I should opt to have more automation instead of more bodies.

 

[zdc1775]

Not rude at all, happy to answer questions!

My personal preference for most rifle applications is taper mount systems. Some of the secondary retention QD systems on the market don't have as good of repeatability, and all of them are a good bit heavier. Direct thread will always be your lightest option, but retention and repeatability just aren't on par with taper mounts. We of course like our own Gyrex taper mounts, but Griffin taper mounts and Rearden (Cherry Bomb style) are also great options. The Rearden stuff will be lightest, Griffin currently supports the most thread patterns and muzzle device styles, our Gyrex has the most substantial taper and our unique helix port brakes (which we may eventually offer in those other taper patterns, but do not currently).

As for the cans, we did get cleaned out on black Friday and have been struggling to catch up ever since, so we're currently out of Five By Fives, but they're on the short list as a very popular model. Just brought in another basic CNC lathe to augment turning, it's almost ready to rock, waiting on a few more tools and tool holders to arrive. So with that, my hope is to not be perpetually out of a few things at any given time. I really need another guy here, but our experience with employees unfortunately showed me that I should opt to have more automation instead of more bodies.

Thank you very much for taking the time to reply here. It was very good information and has really helped me narrow down my choices.

And I completely understand the problem of getting good help, dealing with that at work myself right now. And sadly I can't automate the work I need someone to do.

 

[Txhillbilly]

I've got seven suppressor's, all of them are direct thread. Never had any issues with them loosening up while firing any rifle they are screwed onto. Been using them for decades that way, and have no reason to change.

 

[45/30-06OKIE]

Have Nick set the Accipiter up to accept the DeadAir Keymo QD mount (best, but $$), or the SiCo ASR system (good and economical(er) ).......

ASR mount is awesome in my opinion. Their muzzle brakes are pretty darn good. They make my M1 Garand shoot like a 5.56.

 

[mavracer]

if you're gonna move it between guns QD is the easy button. Direct is the way to go if you pretty much leave it on one gun.
I really like the Griffin taper mount system it's lighter and shorter than ASR or KeyMo and they have a wide array of designs, thread pitch and calibers.

 

[drobs]

I was going to start a new thread but I'll post here and maybe do a new thread. My dilemma lately has been muzzle devices / flash hiders.
I have the Dead Air Key Mo Adapter $250 (aka hub) for my DA Nomad-L. To use it you need to mount $90 Key Mo flash hiders and muzzle brakes on your rifle.
If you want to run your suppressor on multiple rifles / AR15's - $90 flash hiders get expensive fast!!!

Why is that a dilemma? My Deer hunting AR is not set up with a Key Mo Flash hider and it cant use my suppressor. Every new AR I obtain (I have 6+), I have to mount more $90 flash hiders on them. That's annoying!

Basically Dead Air gets you on both the expense of the can and the accessories.

Turns out Griffin makes 2 adapters that fit on on Nato standard A1/A2 flash hiders that will work with my 30 cal DA Nomad can. For me that's revolutionary!
No more buying expensive $100 muzzle devices, shims to time them, plus the annoyance when you cant get the flash hider to time perfectly. I have multiple AR15's both rifles and pistols. Using these mounts, I can mount my suppressor on any of them.

A2 adapter for 1.375x24 suppressors

Griffin Armament is an industry leading manufacturer of suppressors, firearms, and parts for discriminating end users

www.griffinarmament.com

GATE-LOK™ HUB Mount Interface 1.375x24

GATE-LOK™ Mount Interface 1.2875x24

www.griffinarmament.com

I saw the A2 adapter in person at a gun shop. It's a compression type fitting that while easily swapped among rifles, it is not a Quick Change.
Jump to 12m36s of this video to see how it is installed:

Griffin Mounting Systems for 1.375x24 Sound Suppressors

In this video we cover 1.375x24 mounting systems from Griffin ArmamentTimecodes0:00 - Intro1:08 - Suppressor Product Overview1:41 - CAM-LOK® 5:34 - EZ-LOK...

www.youtube.com

I just ordered the 2nd one - the gatelok adapter. Jump to 2m50s to see how easy this can comes off a standard A2 flash hider.

Griffin Armament M4SD II - AN A2 KING

Thank you all so much for watching! We hope this gave you a little bit of insight into the M4SD II by Griffin! Let us know in the comments what you would lik...

www.youtube.com

Both adapters will work with 223 & 30 cal rifles (with my 30 cal Nomad) w/ A2 Flash Hiders or Griffin's flash hider / muzzle brakes.

I'm pretty sure there is a weight savings as well, by going with the Griffin Adapters over the DA Keymo + Keymo Flash Hiders. I haven't done the math though.

side note coupon code: AR15 on Griffin's website gets you 10% off your order.

 

[drobs]

RE QD - suppressors get HOT like 450F to 900F HOT!!!
You're not going to quick change a suppressor while it's hot.

However, it would still be nice to swap your $600 to $900 suppressor on to multiple rifles, quickly and affordably.

 

[zdc1775]

View attachment 1189668

I was going to start a new thread but I'll post here and maybe do a new thread. My dilemma lately has been muzzle devices / flash hiders.
I have the Dead Air Key Mo Adapter $250 (aka hub) for my DA Nomad-L. To use it you need to mount $90 Key Mo flash hiders and muzzle brakes on your rifle.
If you want to run your suppressor on multiple rifles / AR15's - $90 flash hiders get expensive fast!!!

Why is that a dilemma? My Deer hunting AR is not set up with a Key Mo Flash hider and it cant use my suppressor. Every new AR I obtain (I have 6+), I have to mount more $90 flash hiders on them. That's annoying!

Basically Dead Air gets you on both the expense of the can and the accessories.

Turns out Griffin makes 2 adapters that fit on on Nato standard A1/A2 flash hiders that will work with my 30 cal DA Nomad can. For me that's revolutionary!
No more buying expensive $100 muzzle devices, shims to time them, plus the annoyance when you cant get the flash hider to time perfectly. I have multiple AR15's both rifles and pistols. Using these mounts, I can mount my suppressor on any of them.

A2 adapter for 1.375x24 suppressors

Griffin Armament is an industry leading manufacturer of suppressors, firearms, and parts for discriminating end users

www.griffinarmament.com

GATE-LOK™ HUB Mount Interface 1.375x24

GATE-LOK™ Mount Interface 1.2875x24

www.griffinarmament.com

I saw the A2 adapter in person at a gun shop. It's a compression type fitting that while easily swapped among rifles, it is not a Quick Change.
Jump to 12m36s of this video to see how it is installed:

Griffin Mounting Systems for 1.375x24 Sound Suppressors

In this video we cover 1.375x24 mounting systems from Griffin ArmamentTimecodes0:00 - Intro1:08 - Suppressor Product Overview1:41 - CAM-LOK® 5:34 - EZ-LOK...

www.youtube.com

I just ordered the 2nd one - the gatelok adapter. Jump to 2m50s to see how easy this can comes off a standard A2 flash hider.

Griffin Armament M4SD II - AN A2 KING

Thank you all so much for watching! We hope this gave you a little bit of insight into the M4SD II by Griffin! Let us know in the comments what you would lik...

www.youtube.com

Both adapters will work with 223 & 30 cal rifles (with my 30 cal Nomad) w/ A2 Flash Hiders or Griffin's flash hider / muzzle brakes.

I'm pretty sure there is a weight savings as well, by going with the Griffin Adapters over the DA Keymo + Keymo Flash Hiders. I haven't done the math though.

side note coupon code: AR15 on Griffin's website gets you 10% off your order.

I hadn't run across that one before but I like that it works with an A2 flash hider since almost all of my rifles have one of them already.

 

[mavracer]

RE QD - suppressors get HOT like 450F to 900F HOT!!!
You're not going to quick change a suppressor while it's hot.

Just toss an oven mitt or welding glove in your range bag

 

[Soonerpesek]

RE QD - suppressors get HOT like 450F to 900F HOT!!!
You're not going to quick change a suppressor while it's hot.

Just toss an oven mitt or welding glove in your range bag

True on the welding glove….
Sometimes tho, the taper mounts don’t like to give it up when it’s hot….

 

[Captains1911]

I like QD for semi-auto and defensive rifles, direct thread for bolt and hunting guns. I tried direct thread on an AR and it constantly loosened, I don’t have time for that kind of nonsense. I’ve been using YHM QD for years, it may not be the lightest or most aesthetically pleasing, but it’s rugged, reliable, repeatable, and just works.

 

[Captains1911]

Just toss an oven mitt or welding glove in your range bag

Yep, I keep a high temp silicone oven mitt in my range bag for this very purpose.