Tactical AR

TrackStrap™ compatible and Vive Tracker features: 

VRMoveME locomotion updated, alpha support for locomotion with trackers mounted to track straps

From the Steam Page: 

Tactical AR was created with one purpose, to build real firearms skills and habits in virtual reality. Our philosophy is that the best training is fun, and that muscle memory developed in virtual reality effectively translates in to real weapon muscle memory.

Check out the Steam Page