Not all of them, but the most pertinent ...
No rifle shall exceed 12ft/lb muzzle energy. A rifle found to be producing in excess of 12ft/lb will result in disqualification for the competitor.
All rifles shall be in good working order and safe in handling.
All forms of clothing are permissible.
Single rifle slings are permitted.
No straps other than single rifle slings are permitted.
Bean bags, elbow pads & knee pads – refer to host NGB rules.
You need two things in life - WD40 & duct tape. If it moves and it shouldn't, use the duct tape. If it should and it don't, use the WD40.