It's the next major addition to the ARCALOCK family the 3-position lever-release clamp.Since its release in 2018 ARCALOCK has been an industry-standard for fast solid lockup between rifles and accessories. Now they are adding more options and versatility to that mounting with the QD Arcalock Clamp.KEY FEATURES 3-position reversible lever arm milled from stainless steel allowing you to choose between clamped sliding and fall-off. Steel adjustment knob built for many years of reliable use Compatibility with existing accessories using 17S mounting footprint (Atlas and Thunderbeast Products Two-Vets Tripids HArris Bipod Adapter Kits etc) NOTE: Not compatible with RCX Gen 2 the lever cannot fully actuate. Be on the lookout for Gen 3. Removable ARCALOCK pins allowing for use with any ARCA rail 100% Made in America