The Sanlaki gunstock is optimized for Contractors, Onward, and Pavlov.
As you may know, each weapon has its own aim angle and aim position... So, some weapons are more optimized than others. Each game has slightly different controller placement in relation to in-game weapons. So, you can only imagine how challenging it is to create a gunstock that works with all weapons and games!
This is where gunstock calibration feature comes in handy! Luckily, most games like Onward, Contractors, and Pavlov have similar setup and has gunstock calibration feature.
For Onward, the ELITE Sanlaki gunstock is ideal because of the rotational blocker.
For Breachers VR, the calibration is limited but it gets the job done. You can adjust the weapon angle. For Index version, you can set it up from -30 to -40 degrees to make it line up properly.
Ghost of Tabor - NOT recommend. Players reported that it's not ideal to use on this game because of the gameplay. You need to constantly free up your hands, so using a gunstock is not ideal.