This box is designed for standard long action ctgs. and belted magnums in a Rem. M-700 Action.
It is the center feed design, and allows for a cartridge overall length of approx. 3.825".
The receiver and bolt stop must be altered to use this box. Alteration is the same as used on the MBE-3 box.
The box is normally sold with a flat follower.
Outside length is 3.910". Inside length is 3.825".