The Sniper Legs Auto Popper Target Base is compatible with all auto poppers. When assembled, the target will be about 6" off the ground and weighs enough that it doesn't have to be otherwise anchored. This will help if you have grass or brush to contend with. When used with an Auto Squirrel, it is a great addition to any varmint hunter's practice session. The Sniper Legs do not fit MGM rim-fire Auto-Poppers This is the Sniper Legs only.