Whoops...That coulda been ugly.
I put a $33.00 Ebay special http://www.ebay.com/itm/308-308-TPI-...item417658e78f
on my FCP-SR (threaded), and it has worked great thus far for muzzle flip.
Myself, I do prefer threaded brakes.
Just a tad more secure in my feeble mind.
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