So I decided that Red Bull Armory will be the one to build my Mk13 Mod 5 but before I send it to them, I want to gather some parts. I am planning on a Mk13 Mod 5 using a REM 700 LA receiver and IMUNS. Did crane upgrade the scope rail threads to 8-40 on the REM LA receivers to mount the badger rails? Would a badger Medium 1.125 34 mm rings be correct? P/N for scope rail would be appreciated.