Sniper 5 Position Folding Foregrip Grip w/ Storage Molded Finger Grooves Polymer Black. Slide the grip onto the rail back end first. That's the end furthest away from the screw. It's easier. Specifications for Sniper Tactical Folding Foregrips: Manufacturer: Sniper Color: Black Finish: Matte Condition: New Additional Features: Storage Compartment with Plug Fabric/Material: Polymer Features of Sniper Tactical Folding Foregrip Easy to install: Unscrew pin slide grip over rail + align with slot. Reattach pin and tighten. Comfortable to hold: Molded and textured finger grooves 5 locking positions: Flat (back) / 90 / 180 Dergees (vertical) / 270 Degrees/ Flat (forwards) Easy to use: Press knob on left side of grip + move grip into position then release knob to engage lock. Package Contents: Sniper Tactical Folding Foregrip Includes storage compartment plug (as pictured) Sniper GP08: 5 Position Folding Foregrip Grip w/ Storage Molded Finger Grooves Polymer Black