MDT
Titanium Fuzion with a DLC-coated receiver and a 20 MOA Alpine Port split rail, roughly 12 ounces lighter than the stainless version.

The Fuzion Ti is the weight-cutting version of the Fuzion, machined from 6Al-4V titanium with a DLC-coated receiver and a 20 MOA split Alpine Port rail. Published weights including the bolt assembly are 19.5 oz in short action and 21.5 oz in long action, against 31.5 oz and 34.5 oz for the stainless Fuzion, which is where the $300 premium goes.
Add the MDT Fuzion Ti Action to your build and see how it enhances your platform.