ARCALOCK DUAL-CLAMP WITH PICATINNY Area 419 are big ARCALOCK people, and think it's the best solution for most people trying to shoot mid- to long-range. Area 419 also know that there are still a lot of rifles out there with Pic sections on the front end, or bipods that need to be used on both ARCA and Pic attachment points. Finally, they have a clamp that can do both - the ARCALOCK Dual Clamp. Precision milled from aerospace grade 6061-T6 aluminum and stainless steel, their Dual Clamp is versatile, adjustable, feature-rich, and 100% American Made Features: Adjustable tension to ensure a great fit on either mounting surface "On/Off" ARCALOCK Mfg: Area 419