A wall mounted power rig is a common type of powerlifting and bodybuilding training equipment. ... Wall mounted rigs perform all the functions of a power rack however rigs save on gym floor space and are more stable than power racks. Power rigs allow users to perform powerlifting and compound movements safely without a spotter as they come equipped with spotter arms that catch the weight if the user fails to move the weight. This is very useful if the user prefers to train without a training partner. Single power rigs consist of two posts, two wall brackets, two spotter arms and a pull-up bar. Power rigs are most commonly used to perform compound barbell movements such as squats, bench press, deadlifts, and overhead press.