ARM-XTENSIONS 

The most popular rig of all. The Arm Extensions have been around for a long time and are designed to aid performers in creating realistic quadruped movement. Used on films such as, Planets of The Apes, King Kong and Mogwali, they are the best rig for playing creatures/animals that move on all fours. 
Our Arm-Xtensions come with an adjustable forearm brace, adjustable in height and are built with shock absorbers.