This is by far the most reliable action I've used to date.

Features:
Savage Small Shank barrel tenon
Mauser Extractor
Springfield ejector
Toroidal lugs
Remington 700 footprint
Uses rem700 triggers and stocks
Integral recoil lug
Keyed rail interface
Control feed









End state is that after running this action for a few months now, no other action has been the same. Not even the defiance or deviant actions have felt the same to me. Accuracy International is close though!