Area 419 Arcalock QD Clamp Black. KEY FEATURES3-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 useCompatibility 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 rail100percent made in specialized factories Specifications for Area 419 Arcalock QD Clamp: Manufacturer: Area 419 Color: Black Fabric/Material: Stainless Steel Gun Type: Rifle Features of Area 419 Arcalock QD Clamp: 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 Package Contents: Area 419 Arcalock QD Clamp Area 419 419-ALK-QD: Arcalock QD Clamp Black