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Thread: Nervous about changing muzzle brake on new 17

  1. #11
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    I installed an ASR brake on my 17 for an Omega also. Removing the old brake was easy with two wrenches and required no vise. Clean threads thoroughly. I used a KBA ring and shims to hand tighten the ASR brake to about 10 o'clock. Put the barrel in a vise, sandwiched between two blocks of wood (with grooves drilled in) and rosin (to keep from slipping). Applied Rockset. Torqued to 20 in-lb and twelve o'clock. Let cure overnight and done.


  2. #12
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    Quote Originally Posted by kilyung View Post
    I installed an ASR brake on my 17 for an Omega also. Removing the old brake was easy with two wrenches and required no vise. Clean threads thoroughly. I used a KBA ring and shims to hand tighten the ASR brake to about 10 o'clock. Put the barrel in a vise, sandwiched between two blocks of wood (with grooves drilled in) and rosin (to keep from slipping). Applied Rockset. Torqued to 20 in-lb and twelve o'clock. Let cure overnight and done.

    Think you mean 20 ft/lbs
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  3. #13
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    Quote Originally Posted by HK SD9 Tactical View Post
    Think you mean 20 ft/lbs
    Oops. Yes 20 ft/lbs. I was installing a rail when I wrote that so had 20 in/lb on the brain.

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  5. #14
    Member 300blkout's Avatar
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    Quote Originally Posted by HK SD9 Tactical View Post
    Using RockSet also allows you to not have to torque the muzzle device to the specified amount which IMHO is too much.
    So if I wanted to mount a flash hider, all I have to do is remove the muzzle brake and locking ring and then HAND TIGHTEN the flash hider down with rocksett? Without torque on the flash hider I can mount a suppressor without fear of my flash hider backing off?

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    Quote Originally Posted by 300blkout View Post
    So if I wanted to mount a flash hider, all I have to do is remove the muzzle brake and locking ring and then HAND TIGHTEN the flash hider down with rocksett? Without torque on the flash hider I can mount a suppressor without fear of my flash hider backing off?

    Sent from my SAMSUNG-SM-N920A using Tapatalk
    RockSet is good stuff. I would torque it down somewhat but you do not have to torque it down to 25ft/lbs. I suspect that with RockSet, once cured, it will handle the heat and vibrations. Because you mentioned a suppressor though, I would torque it down a little. maybe 15ft/lbs or so. I have never run a test without torquing it down and just using Rockset. Make sure you have concentricity.

    High temperature Rocksett all-purpose ceramic adhesive cement
    Features:

    • Incredible temperature resistance, -350 degrees F up to 2,015 degrees F
    • Intended for use on threads an cylindrical assemblies (flash hiders & muzzle brakes)
    • In addition to acting as an adhesive, Rocksett acts vibration dampening material
    • Non-toxic, odorless, and non-flammable
    • Withstands oils, fuils, acids, and alkalis
    • Long shelf life
    • No mixing or priming required
    • Bonds ceramic, glass, and metals
    • Surfaces to be bonded should be dry and grease free
    • Ships in a 2oz bottle

    Benefits:

    • Extremely high temperature range makes Rocksett ideal for attaching muzzle devices
    • Several suppressor manufacturers use Rocksett to ensure that muzzle devices to not loosen when used in conjunction with a suppressor




    Make your own decision as to how much you want to torque it down.....
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  7. #16
    Member 300blkout's Avatar
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    Quote Originally Posted by HK SD9 Tactical View Post
    RockSet is good stuff. I would torque it down somewhat but you do not have to torque it down to 25ft/lbs. I suspect that with RockSet, once cured, it will handle the heat and vibrations. Because you mentioned a suppressor though, I would torque it down a little. maybe 15ft/lbs or so. I have never run a test without torquing it down and just using Rockset. Make sure you have concentricity.

    High temperature Rocksett all-purpose ceramic adhesive cement
    Features:

    • Incredible temperature resistance, -350 degrees F up to 2,015 degrees F
    • Intended for use on threads an cylindrical assemblies (flash hiders & muzzle brakes)
    • In addition to acting as an adhesive, Rocksett acts vibration dampening material
    • Non-toxic, odorless, and non-flammable
    • Withstands oils, fuils, acids, and alkalis
    • Long shelf life
    • No mixing or priming required
    • Bonds ceramic, glass, and metals
    • Surfaces to be bonded should be dry and grease free
    • Ships in a 2oz bottle

    Benefits:

    • Extremely high temperature range makes Rocksett ideal for attaching muzzle devices
    • Several suppressor manufacturers use Rocksett to ensure that muzzle devices to not loosen when used in conjunction with a suppressor




    Make your own decision as to how much you want to torque it down.....
    Thank you so much for all your help and information! I'm definitely going to reference This Thread when I finally get around to changing out muzzle devices... one last question, if I do need to torque the muzzle device down to 15ft/lbs, do I need to remove the barrel or is there some way I can clamp the barrel down, or can I even do it by hand? Thank you again for all your help

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  8. #17
    Junior Member electricjet's Avatar
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    ... OP ... may suggest to look at this also in conjunction with suggested Rocksett:
    https://www.kbacustom.com/our-produc...lder-ring.html


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  9. #18
    Junior Member electricjet's Avatar
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    ... also you can find a Wheeler Barrel Clamp on Amazon ...


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  10. #19
    Member 300blkout's Avatar
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    Quote Originally Posted by HK SD9 Tactical View Post
    RockSet is good stuff. I would torque it down somewhat but you do not have to torque it down to 25ft/lbs. I suspect that with RockSet, once cured, it will handle the heat and vibrations. Because you mentioned a suppressor though, I would torque it down a little. maybe 15ft/lbs or so. I have never run a test without torquing it down and just using Rockset. Make sure you have concentricity.

    High temperature Rocksett all-purpose ceramic adhesive cement
    Features:

    • Incredible temperature resistance, -350 degrees F up to 2,015 degrees F
    • Intended for use on threads an cylindrical assemblies (flash hiders & muzzle brakes)
    • In addition to acting as an adhesive, Rocksett acts vibration dampening material
    • Non-toxic, odorless, and non-flammable
    • Withstands oils, fuils, acids, and alkalis
    • Long shelf life
    • No mixing or priming required
    • Bonds ceramic, glass, and metals
    • Surfaces to be bonded should be dry and grease free
    • Ships in a 2oz bottle

    Benefits:

    • Extremely high temperature range makes Rocksett ideal for attaching muzzle devices
    • Several suppressor manufacturers use Rocksett to ensure that muzzle devices to not loosen when used in conjunction with a suppressor




    Make your own decision as to how much you want to torque it down.....
    Would I need the kba ring for the original Aac 51t miter flash hider? With its over the barrel design?

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  11. #20
    Senior Member FS2KSTD's Avatar
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    Quote Originally Posted by 300blkout View Post
    Would I need the kba ring for the original Aac 51t miter flash hider? With its over the barrel design?
    The KBA won't work with that suppressor mount and unless you have a MITER can, it's a moot point.
    Last edited by FS2KSTD; 03-11-2017 at 03:39 PM.
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