Xts extended bolt assisted releases - XTS Extended Bolt Assisted Releases

I only leave four stars to get attention. The mag release works great on my 80% lower with psa upper. In that application it’s 5 stars however Would not work on 80% with BCA Side charging upper which is what I bought it for. I put it on a rifle that has been built out of parts that were upgraded on others. Not pretty but makes a great beater.