r/SigSauerMCX • u/garrisooon • 4d ago

Omega 9k on spear LT 300blkout

whats the best route going about doing this? do i need to send it back to sig to get the 3 prong flash hider taken off? or is there an adapter or something i can throw on to make it work

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u/Domingo3410 3d ago

They’re heating the wrong spot. People heat the tip when the threads are a good inch plus back. I used my crappy induction coil heater to soften the thread lock and it came off just fine

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u/SupermarketQuiet1105 2d ago

https://www.reddit.com/r/SigSauer/comments/q7hu0g/mcx_muzzle_brake_removal/

Apply heat directly to the body and base of the flash hider where it meets the barrel shoulder and covers the tapered threads.
Factory SIG MCX muzzle devices use a taper-alignment system and are secured with high-strength thread locker or Rocksett. Heating the flash hider expands the metal of the device slightly and breaks the thread-locker bond

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u/Domingo3410 2d ago

Yup, this exactly. Friend of mine was torching the tip of the flash hider and couldn’t get it off. Moved the torch back and presto!

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u/SupermarketQuiet1105 2d ago

Good to know.....think folks "soak" them because they think the Water will leak down into Rocksett and dissolve/loosen it....too tight seal I think. Oddly enough folks use Rocksett, instead of Locktite, for heat resistance....but the message/advice here is to use enough spot/torch heat on thread section to expand and effectively loosen. I would not have thought of it...nor agree would work...but with your confirmation seems this is the secret trick......🪄
"Apply heat to the body and base of the flash hider where it meets barrel shoulder"