Joel, the Apollo will take a wyatt's 3" internal box? So the mbe5 cfe5 boxes should drop right in?My Kratos is a standard long action 700 inlet with two small changes. The ejection port has been lengthened .100" forward and a .100" rearward, and the bolt handle is straight.
The Apollo is a standard short action 700 inlet with the same changes. Both of these receivers will drop into their respective 700 inlets without modifications, but the modifications make them a perfect fit.