The Magpul QR Rail Grabber provides a compact, user-adjustable, true quick-release mounting adapter that's compatible with a wide variety of products that use the A.R.M.S 17S style footprint. Developed primarily for our Magpul Bipods, the Bipod QR Adapter can be used with either Picatinny or RRS/ARCA interfaces. With its user-adjustable dual clamping mechanism, the QR Rail Grabber slims down to the rail it sits on, ensuring a clean, compact, and unobtrusive fit. A knurled knob makes for easy manipulation and sits close to the body of the adapter and out of the way. Machined from Mil-Spec aluminum, it's extremely rugged and provides a stable platform for hard-use application. Made in the USA.