Hand Grip Spring Loaded Bi-pod for Weaver/Picatinny Mount (Use as foregrip as well)Push Button DeploymentPress Button makes legs spring out， Push Button to unlock Bipod LegsConstruction: Advanced Reinforced PolymersFits: Standard Weaver Rails and Mil-STD 1913 Picatinny Rail SystemsDeployed Height: 8.25"Deployed Width: 6.8"Closed Height: 6"Weight: 7.4 ozSpring Loaded Legs Retract by pushing back in. come with dise mount and steel inserted legSpring Loaded legs also Open instantly with a push of a button.The Grip Pod's legs deploy at the push of a button - instantly