MAGPUL QR RAIL GRABBER 17S ADAPTER.

Magpul Industries QR Rail Grabber, Developed Primarily For Magpul Bipods, True Quick-Release Plate That is Compatible With a Wide Variety of Products That Use The A.R.M.S. 17S Style Footprint, Compatible With Both Picatinny and RRS/ARCA Interfaces, Aluminum, Black MAG1196-BLK.