View Full Version : Long Term Durability of Rocksett on Muzzle Threads and Installation Torque?
Doc Safari
01-25-19, 10:56
I had a new barrel installed on an AR, and I found out later the gunsmith may have used Rocksett to attach the muzzle device because he couldn't get it to index properly with just the torque wrench (didn't want to overtighten). He doesn't remember if he used Rocksett or not (it's been a while since I had the work done).
I know Rocksett has a reputation for high resistance to heat, solvents, etc., but what is the long-term durability of the product?
The AR only shoots semi-auto, but there are range sessions and shooting matches where a lot of ammo is expended, meaning the barrel does get really hot and goes through repeated heating/cooling cycles.
Is Rocksett the kind of product that is more or less permanent unless deliberate attempt is made to remove it?
I had always heard that Rocksett is what people recommend as a removable way to mount suppressors (maybe I was told wrong).
But then again, if I remember correctly, an AAC flash hider I ordered came with a tube of Rocksett.
What say you? Is this an item that should be checked periodically for looseness or should I have confidence that if the flash hider was installed properly with Rocksett that it's GTG unless I soak it in hot water to remove it?
Ive used Rocksett on everything including what your doing, I have had good luck. Not sure what others may have experienced or mfg suggested use is, but mine has been good.
PB
Torque wrench. You don't need no stinkin torque wrench to time a muzzle device. With a shim kit, you can get it timed.
If the device has some tension against the shoulder, the rockset should be fine.
SureFire recommends rocksett on their MDs, my WarComp had some included with it and Robb definitely used it when he assembled my upper.
Sent from my iPhone using Tapatalk
Get a new gunsmith. In other news using the search feature will reveal several discussions about Rocksett.
Doc Safari
01-25-19, 20:24
Get a new gunsmith. In other news using the search feature will reveal several discussions about Rocksett.
Did that. It turned up very few threads and not much definitive info.
Did that. It turned up very few threads and not much definitive info.
The only thing I saw was that old rocksett could potentially pose a problem. Didn’t seem that bad to me.
Sent from my iPhone using Tapatalk
https://www.m4carbine.net/showthread.php?203566-Rocksett-for-supressed-and-non-suppressed-muzzle-device-installation
https://www.m4carbine.net/showthread.php?188117-Rocksett-Removal
https://www.m4carbine.net/showthread.php?173931-SOCOM-Flash-Hiders-Suppressor-Adapters-Rockset-or-Red-Loctite
https://www.m4carbine.net/showthread.php?198380-Dead-Air-Key-Mo-Stuck-Muzzle-Device
https://www.m4carbine.net/showthread.php?104136-AAC-mount-Rockset-required-or-will-Loctite-suffice
I had a new barrel installed on an AR, and I found out later the gunsmith may have used Rocksett to attach the muzzle device because he couldn't get it to index properly with just the torque wrench (didn't want to overtighten). He doesn't remember if he used Rocksett or not (it's been a while since I had the work done).
I know Rocksett has a reputation for high resistance to heat, solvents, etc., but what is the long-term durability of the product?
The AR only shoots semi-auto, but there are range sessions and shooting matches where a lot of ammo is expended, meaning the barrel does get really hot and goes through repeated heating/cooling cycles.
Is Rocksett the kind of product that is more or less permanent unless deliberate attempt is made to remove it?
I had always heard that Rocksett is what people recommend as a removable way to mount suppressors (maybe I was told wrong).
But then again, if I remember correctly, an AAC flash hider I ordered came with a tube of Rocksett.
What say you? Is this an item that should be checked periodically for looseness or should I have confidence that if the flash hider was installed properly with Rocksett that it's GTG unless I soak it in hot water to remove it?
Skyfire1201
01-28-19, 00:51
https://www.m4carbine.net/showthread.php?203566-Rocksett-for-supressed-and-non-suppressed-muzzle-device-installation
https://www.m4carbine.net/showthread.php?188117-Rocksett-Removal
https://www.m4carbine.net/showthread.php?173931-SOCOM-Flash-Hiders-Suppressor-Adapters-Rockset-or-Red-Loctite
https://www.m4carbine.net/showthread.php?198380-Dead-Air-Key-Mo-Stuck-Muzzle-Device
https://www.m4carbine.net/showthread.php?104136-AAC-mount-Rockset-required-or-will-Loctite-suffice
Wow, didn't know Rocksett could be so hard to remove on a direct thread can. I've removed Rocksett muzzle devices before, all it took was a bit more torque. I have a Saker-K direct thread in NFA jail that I was planning on Rocksetting to a dedicated upper, this thread changed my mind.
Iraqgunz, in one of the replies you mentioned using blue locktite on a Gemtech direct thread can, and it never had problems. How much torque was used when mounting the can?
If all it took was a bit more torque to remove the device, then you applied the Rocksett wrong. When applied correctly and torqued to 28-30 ft/lb, it isn't budging ! But the beauty of Rocksett is if you soak it water for 8-12 hours, it breaks down...
If all it took was a bit more torque to remove the device, then you applied the Rocksett wrong. When applied correctly and torqued to 28-30 ft/lb, it isn't budging ! But the beauty of Rocksett is if you soak it water for 8-12 hours, it breaks down...
If you tighten a device with rocksett and 28 to 30#, it will probably take 28-34# to remove. Ive removed plenty from my own work to factory SR25, and its all the same. If youre requiring a lot more force its because the device was initislly improperly torqued.
Silencerco used to use Rockset when assembling their Omega suppressors. They found that it didn't hold up well. Now, they use red Locktite with better results.
I have never had issues removing Rocksett either. I simply followed instructions I was given. Most of the time sticking the muzzle device in boiling water 10-15 minutes was enough to make the Rocksett soluble and and they came right off.
Not sure about the Gemtech to be honest, it was whatever they recommended at the time.
Wow, didn't know Rocksett could be so hard to remove on a direct thread can. I've removed Rocksett muzzle devices before, all it took was a bit more torque. I have a Saker-K direct thread in NFA jail that I was planning on Rocksetting to a dedicated upper, this thread changed my mind.
Iraqgunz, in one of the replies you mentioned using blue locktite on a Gemtech direct thread can, and it never had problems. How much torque was used when mounting the can?
Doc Safari
01-29-19, 09:52
So I talked at length to my gunsmith this weekend. Upon seeing the rifle he remembered it. He says he did NOT use Rocksett but had to shim it because it didn't time correctly when just torquing the flash hider onto the barrel. Here's the thing: crush washers on my other AR's are obviously deformed and look "flared" against their flash hiders. This shimmed one does not. Is there a way to verify torque value without dismounting the muzzle attachment and starting over?
My concern is that this muzzle device was installed with a minimum of tightness and will eventually loosen. I don't know how in the blue blazes a Colt flash hider does not time properly on a Colt barrel using the prescribed crush washer, but that's the story I'm getting.
Is there a way to verify torque value without dismounting the muzzle attachment and starting over?
Set a click type torque wrench to the specified torque and tighten the muzzle device. If the muzzle device is under torqued, this will tighten it properly. If it's at the specified toque or more, the torque wrench will click without tightening the muzzle device.
I don't know how in the blue blazes a Colt flash hider does not time properly on a Colt barrel using the prescribed crush washer, but that's the story I'm getting.
Because if the muzzle device gets turned past the proper position, it cannot be loosened, then re-positioned. It will have to get turned all the way around again to maintain proper torque.
In my opinion, there's way too much thought going into this muzzle device. If it's not a mount, it'll be fine.
You need a new gunsmith.
So I talked at length to my gunsmith this weekend. Upon seeing the rifle he remembered it. He says he did NOT use Rocksett but had to shim it because it didn't time correctly when just torquing the flash hider onto the barrel. Here's the thing: crush washers on my other AR's are obviously deformed and look "flared" against their flash hiders. This shimmed one does not. Is there a way to verify torque value without dismounting the muzzle attachment and starting over?
My concern is that this muzzle device was installed with a minimum of tightness and will eventually loosen. I don't know how in the blue blazes a Colt flash hider does not time properly on a Colt barrel using the prescribed crush washer, but that's the story I'm getting.
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