Surefire SOCOM: will it mount to legacy FH556?

[GTF425]

I've heard answers both ways and am seeking clarification from anyone who can confirm:

Will the SOCOM cans mount to the last generation 5.56 flash hider? Specifically the FH556-215.

[MegademiC]

Yes, but it can spin:

https://www.ar15.com/forums/armory/A...ts_/20-414778/

[GTF425]

Yes, but it can spin:

https://www.ar15.com/forums/armory/A...ts_/20-414778/

Thank you.

[TMS951]

I have a B&T flash hider that the Surefire mounts too. It also spins with out there being the little male notch on the device.

Where this female notch is on the suppressor it now leaks gas through there as there is nothing in the void. Short term its not a big deal, long term that empty notch in the suppressor would fill with carbon and be a pain to clean. Likely why they would say its not compatible.

[Hkbeltfed]

Where this female notch is on the suppressor it now leaks gas through there as there is nothing in the void. Short term its not a big deal, long term that empty notch in the suppressor would fill with carbon and be a pain to clean.

I’m guessing this is speculation on your part because I use 2 Socom suppressors exclusively with legacy muzzle devices “long term” and neither notch fills with carbon nor requires cleaning.

I prefer the legacy adapters as IF the suppressor gets stuck, which rarely happens as I remove them warm, I can turn the suppressor on the device to break it loose.

[TMS951]

Yes, you are correct I have not shot it long term on there after seeing where the gas was leaking.

The idea of being able to twist it to remove is smart, I hadn't thought of that.

Does the void in the suppressor ever fill with carbon from the passing gas, or do you just find it easy to clean? Does it easily attached to a new mount with the indexing notch after shooting it on a legacy mount?