I have a brand new open package Q Series Cherry Bomb threaded brake for using a suppressor. It is 9/16-24 which is most common with standard M1A barrels. It has never been mounted, I just ordered the wrong one without realizing my specific barrel is 5/8-24 thread. Photos shows it next to one of my other ones that is mounted.
Located in the Waco area but don’t mind shipping. $65 pickup $69 shipped.