The Area 419 ARCALOCK 10'' Universal Dovetail Rail by Area 419 Firearms LLC offers a precision, lightweight solution for secure rail attachment, featuring serrated rail sides that interface with our proprietary clamp design to mechanically lock the rail in place with no movement, while the edges remain non-sawing and HAND-friendly. This 10" rail is backwards compatible with standard Arca accessories but will not lock without our clamp, and its 3.5 oz weight balances strength with nimble handling for a wide range of setups. Built to the RRS 1.5" Dovetail Standard, it ensures reliable compatibility with lever clamps, and its radiused corners and chamfered edges reflect meticulous machining and long-term durability. Designed to fit a variety of rifle configurations with up to four attachment points for maximum strength and stability, the rail is Type 3 hard coat anodized and crafted from 6061-T6 aluminum, made in-house in the USA from USA-sourced material on USA-made CNCs. It ships with a long Remington 700-style action screw to align with the front action screw attachment point, with trimming likely required, and a 3/4" paddle bit and drill press may be needed for tee-nuts installation, which are included along with the needed hardware.