I am curious as to what ptr says about the 80 degree locking piece as well. I too have the hk parts and rcm and they don’t fit. I would really like to run 147s suppressed without having to replace the bolt head.
I'm sure it will work out. Although I don't own any PTR firearms, I've heard nothing but good reviews on their CS.
Never had anything that bad happen but ive always hated the fit on my sb braces, the pins always have to be tapped in and out with a hammer when i install them.. kind of defeats the purpose of having push pins
Have you received any updates from ptr regarding the locking piece?