Re: Sig 716 flash suppresor
Muzzle devices (flash hiders, brakes) are "pinned" on 14.5" inch barrels only so that the overall length remains 16".
Barrels less than 16" require a tax stamp.
There is no reason to pin muzzle devices on barrels less than 14.5".
I think...maybe, some states require them to be non removable on all barrel lengths, but I don't know for sure. I don't really follow the laws of other states.
It is best to clamp the barrel in a vise with wood blocks to protect it if the flash hider doesn't turn off easy. If it's on there tight you can do damage.
Also check to see if Sig uses anything to lock it on the threads such as Lok-Tite (use heat) or Rockset (soak in water) to loosen.
“There will be a revolution in this country!”
“I don’t believe people should to be able to own guns.”
"Stand your ground. Don't fire unless fired upon, but if they mean to have a war let it begin here."
~Captain John Parker, to his Minute Men on Lexington Green, April 19, 1775.