Greetings from Australia. This is my first post & look forward to many more. In this instance I am trying to establish if the M700 in 6.8 SPC uses a different magazine box & follower to the .223 Remington? If so I greatly appreciate advice as to Remington part numbers, please. I have a friend who has sought my assistance in overcoming multiple feed situations in his converted 223. Any thoughts would be most appreciated, please.