The magpul qr rail grabber provides a compact, user-adjustable, true quick-release plate 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, its extremely rugged and provides a stable platform for hard-use application.Made in the usa.Material: AluminumFinish: Black