I have ask several questions bout converting to my new boyds. How do i know if i have E reciever. On snipershide google is talks about if barrel is heavy for 4" befor the tapere starts but mine is a heavy barrel. Boyds has the metal i am looking for but dont know if i need it for E reciever or standard. I know I am burning this subject up but I dont wont to buy twice and wait 4 more weeks.