Depends on what you mean by Two handed rifle support.
Right now if you move your off hand into the stabilization area and press that controller’s trigger you will “attach” the offhand and stabilize the weapon (lowers recoil). You can even drop the rifle with your main hand and it will remain attached to your off hand (for bolt action rifle manipulation). If you want both hands to affect aiming, that isn’t currently in, but I plan on adding it at some point as an option (don’t quote me but I want this in for the first update if at all possible).
Just a heads up everyone, stabilization has taken longer than I initially expected because I am trying to write a system that will work with future attachments like grenade launchers as well. So far I have gone through like 5 different versions until I landed on the one I am currently bug testing. The vive’s lack of buttons has made it a huge headache, I cannot wait for the new controller! The video is late in coming but I hope to have it out by tomorrow at the latest.