Does this mean you cannot separate the upper receiver from the lower?
If you can separate the two then unscrew the cheek rest and butt stock. Once these two and the side screws are removed, you simply have to use force to pry it open. Don't be afraid to use force as long as the cheek rest, butt stock, upper receiver, and side screws are all removed. It should split just fine.
Somewhat weird that no one has a guide opening the stock haha.
